diff --git a/app/Actions/ActionsReport.php b/app/Actions/ActionsReport.php
--- a/app/Actions/ActionsReport.php
+++ b/app/Actions/ActionsReport.php
@@ -64,8 +64,6 @@
 
     /**
      * Determines if one of the action has failed.
-     *
-     * @return bool
      */
     public function containsError () : bool {
         foreach ($this->actions as $action) {
diff --git a/app/Analyzers/BasePayloadAnalyzer.php b/app/Analyzers/BasePayloadAnalyzer.php
--- a/app/Analyzers/BasePayloadAnalyzer.php
+++ b/app/Analyzers/BasePayloadAnalyzer.php
@@ -67,8 +67,6 @@
 
     /**
      * Gets the full path to the configuration file.
-     *
-     * @return string
      */
     public function getConfigurationFileName () : string {
         $dir = Config::get(
@@ -87,9 +85,7 @@
     }
 
     /**
-     * Gets full qualified class name for configuration.
-     *
-     * @return string
+     * Gets full qualified class name for configuration
      */
     private function getCandidateConfigurationClassName() : string {
         return 'Nasqueron\Notifications\Analyzers\\' . static::SERVICE_NAME //ns
@@ -146,8 +142,6 @@
     /**
      * Determines if the event isn't related to a specific item,
      * but to the general service.
-     *
-     * @return bool
      */
     public function isAdministrativeEvent () : bool {
         return false;
diff --git a/app/Analyzers/DockerHub/BaseEvent.php b/app/Analyzers/DockerHub/BaseEvent.php
--- a/app/Analyzers/DockerHub/BaseEvent.php
+++ b/app/Analyzers/DockerHub/BaseEvent.php
@@ -27,22 +27,18 @@
      *
      * This method allows analyzer to edit the payload.
      */
-    public function getPayload () {
+    public function getPayload () : \stdClass {
         return $this->payload;
     }
 
     /**
      * Gets notification text for this event.
-     *
-     * @return string
      */
-    abstract public function getText();
+    abstract public function getText() : string;
 
     /**
      * Gets notification link related to this event.
-     *
-     * @return string
      */
-    abstract public function getLink();
+    abstract public function getLink() : string;
 
 }
diff --git a/app/Analyzers/DockerHub/BuildFailureEvent.php b/app/Analyzers/DockerHub/BuildFailureEvent.php
--- a/app/Analyzers/DockerHub/BuildFailureEvent.php
+++ b/app/Analyzers/DockerHub/BuildFailureEvent.php
@@ -18,17 +18,12 @@
 
     /**
      * Gets a MailGun message.
-     *
-     * @return \stdClass
      */
-    private function getMailGunPayload () {
+    private function getMailGunPayload () : \stdClass {
         return Mailgun::fetchMessageFromPayload($this->payload);
     }
 
-    /**
-     * @return string
-     */
-    private function getMailBody () {
+    private function getMailBody () : string {
         $bodyProperty = 'body-plain';
         return $this->payload->$bodyProperty;
     }
@@ -39,17 +34,15 @@
      * @param $string Regular expression
      * @return string
      */
-    private function extractFromBody ($regex) {
+    private function extractFromBody ($regex) : string {
         preg_match($regex, $this->getMailBody(), $matches);
         return $matches[1];
     }
 
     /**
      * Gets text from payload.
-     *
-     * @return string
      */
-    public function getText() {
+    public function getText() : string {
         $repo = $this->extractFromBody("@\"(.*?\/.*?)\"@");
 
         return "Image build by Docker Hub registry failure for $repo";
@@ -57,10 +50,8 @@
 
     /**
      * Gets link from payload.
-     *
-     * @return string
      */
-    public function getLink() {
+    public function getLink() : string {
         return $this->extractFromBody("@(https\:\/\/hub.docker.com\/r.*)@");
     }
 
diff --git a/app/Analyzers/DockerHub/PushEvent.php b/app/Analyzers/DockerHub/PushEvent.php
--- a/app/Analyzers/DockerHub/PushEvent.php
+++ b/app/Analyzers/DockerHub/PushEvent.php
@@ -6,10 +6,8 @@
 
     /**
      * Gets text from payload.
-     *
-     * @return string
      */
-    public function getText() {
+    public function getText() : string {
         $repo = $this->payload->repository->repo_name;
         $who = $this->payload->push_data->pusher;
 
@@ -18,10 +16,8 @@
 
     /**
      * Gets link from payload.
-     *
-     * @return string
      */
-    public function getLink() {
+    public function getLink() : string {
         return $this->payload->repository->repo_url;
     }
 
diff --git a/app/Analyzers/GitHub/Events/CommitCommentEvent.php b/app/Analyzers/GitHub/Events/CommitCommentEvent.php
--- a/app/Analyzers/GitHub/Events/CommitCommentEvent.php
+++ b/app/Analyzers/GitHub/Events/CommitCommentEvent.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $comment = $this->payload->comment;
@@ -29,8 +27,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->comment->html_url;
diff --git a/app/Analyzers/GitHub/Events/CreateEvent.php b/app/Analyzers/GitHub/Events/CreateEvent.php
--- a/app/Analyzers/GitHub/Events/CreateEvent.php
+++ b/app/Analyzers/GitHub/Events/CreateEvent.php
@@ -19,8 +19,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $repository = $this->payload->repository->full_name;
@@ -62,8 +60,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         $type = $this->payload->ref_type;
diff --git a/app/Analyzers/GitHub/Events/DefaultBranchEvent.php b/app/Analyzers/GitHub/Events/DefaultBranchEvent.php
--- a/app/Analyzers/GitHub/Events/DefaultBranchEvent.php
+++ b/app/Analyzers/GitHub/Events/DefaultBranchEvent.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $repository = $this->payload->repository->full_name;
@@ -31,8 +29,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->repository->html_url;
diff --git a/app/Analyzers/GitHub/Events/DeleteEvent.php b/app/Analyzers/GitHub/Events/DeleteEvent.php
--- a/app/Analyzers/GitHub/Events/DeleteEvent.php
+++ b/app/Analyzers/GitHub/Events/DeleteEvent.php
@@ -16,8 +16,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $repository = $this->payload->repository->full_name;
@@ -46,11 +44,9 @@
 
     /**
      * Gets link segments for the type
-     *
-     * @return Array
      * @SuppressWarnings(PHPMD.UnusedPrivateMethod)
      */
-    private function getLinkRefSegments () {
+    private function getLinkRefSegments () : array {
         return [
             'tag' => '/tags',
             'branch' => '/branches',
@@ -59,8 +55,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         $type = $this->payload->ref_type;
diff --git a/app/Analyzers/GitHub/Events/Event.php b/app/Analyzers/GitHub/Events/Event.php
--- a/app/Analyzers/GitHub/Events/Event.php
+++ b/app/Analyzers/GitHub/Events/Event.php
@@ -33,7 +33,7 @@
      * @param string $eventName The event name (e.g. commit_comment)
      * @return string The event class name (e.g. CommitCommentEvent)
      */
-    public static function getClass (string $eventName) {
+    public static function getClass (string $eventName) : string {
         return __NAMESPACE__ . '\\' . self::toCamelCase($eventName) . 'Event';
     }
 
@@ -45,9 +45,8 @@
      * Gets an instance of the event class, from the
      *
      * @param string $eventName The event name (e.g. commit_comment)
-     * @return Event
      */
-    public static function forPayload (string $eventName, $payload) {
+    public static function forPayload (string $eventName, $payload) : Event {
         $class = self::getClass($eventName);
         if (!class_exists($class)) {
             throw new \InvalidArgumentException(
@@ -72,7 +71,7 @@
         string $text,
         int    $strLen = 114,
         string $symbol = '…'
-    ) {
+    ) : string {
         $len = strlen($text);
         if ($len <= $strLen) {
             return $text;
diff --git a/app/Analyzers/GitHub/Events/ForkEvent.php b/app/Analyzers/GitHub/Events/ForkEvent.php
--- a/app/Analyzers/GitHub/Events/ForkEvent.php
+++ b/app/Analyzers/GitHub/Events/ForkEvent.php
@@ -13,8 +13,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         return trans(
@@ -28,8 +26,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->forkee->html_url;
diff --git a/app/Analyzers/GitHub/Events/IssueCommentEvent.php b/app/Analyzers/GitHub/Events/IssueCommentEvent.php
--- a/app/Analyzers/GitHub/Events/IssueCommentEvent.php
+++ b/app/Analyzers/GitHub/Events/IssueCommentEvent.php
@@ -15,15 +15,13 @@
      * @param string $action The action to check
      * @return bool true if the action is valid; otherwise, false
      */
-    protected static function isValidAction (string $action) {
+    protected static function isValidAction (string $action) : bool {
         $actions = ['created', 'edited', 'deleted'];
         return in_array($action, $actions);
     }
 
     /**
      * Gets description for the payload.
-     *
-     * @return string
      */
     public function getDescription () : string {
         $action = $this->payload->action;
@@ -54,8 +52,6 @@
 
     /**
      * Gets link for the payload.
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->comment->html_url;
diff --git a/app/Analyzers/GitHub/Events/PingEvent.php b/app/Analyzers/GitHub/Events/PingEvent.php
--- a/app/Analyzers/GitHub/Events/PingEvent.php
+++ b/app/Analyzers/GitHub/Events/PingEvent.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         return trans(
@@ -26,8 +24,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return '';
diff --git a/app/Analyzers/GitHub/Events/PullRequestEvent.php b/app/Analyzers/GitHub/Events/PullRequestEvent.php
--- a/app/Analyzers/GitHub/Events/PullRequestEvent.php
+++ b/app/Analyzers/GitHub/Events/PullRequestEvent.php
@@ -15,7 +15,7 @@
      * @param string $action The action to check
      * @return bool true if the action is valid; otherwise, false
      */
-    protected static function isValidAction(string $action) {
+    protected static function isValidAction(string $action) : bool {
         $actions = [
             'assigned', 'unassigned',
             'labeled', 'unlabeled',
@@ -27,8 +27,6 @@
 
     /**
      * Gets description for the payload.
-     *
-     * @return string
      */
     public function getDescription () : string {
         $action = $this->payload->action;
@@ -48,10 +46,8 @@
 
     /**
      * Gets the parameters to pass to the localisation message
-     *
-     * @return array
      */
-    private function getLocalisationParameters () {
+    private function getLocalisationParameters () : array {
         $parameters = [
             'author'  => $this->payload->sender->login,
             'number'  => $this->payload->number,
@@ -68,7 +64,7 @@
     /**
      * @return string The last assignee username, or "" if there is no assignee.
      */
-    private function getLastAssignee() {
+    private function getLastAssignee() : string {
         $assignees = $this->payload->pull_request->assignees;
 
         if (count($assignees) === 0) {
@@ -81,8 +77,6 @@
 
     /**
      * Gets link for the payload.
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->pull_request->html_url;
diff --git a/app/Analyzers/GitHub/Events/PushEvent.php b/app/Analyzers/GitHub/Events/PushEvent.php
--- a/app/Analyzers/GitHub/Events/PushEvent.php
+++ b/app/Analyzers/GitHub/Events/PushEvent.php
@@ -18,7 +18,7 @@
      * @param int $count The count of commits
      * @return string The l10n message key for description
      */
-    private static function getDescriptionMessageKey (int $count) {
+    private static function getDescriptionMessageKey (int $count) : string {
         $key = 'GitHub.EventsDescriptions.PushEvent';
 
         if ($count === 0) {
@@ -30,8 +30,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $n = count($this->payload->commits);
@@ -52,8 +50,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         $n = count($this->payload->commits);
diff --git a/app/Analyzers/GitHub/Events/RepositoryEvent.php b/app/Analyzers/GitHub/Events/RepositoryEvent.php
--- a/app/Analyzers/GitHub/Events/RepositoryEvent.php
+++ b/app/Analyzers/GitHub/Events/RepositoryEvent.php
@@ -15,15 +15,13 @@
      * @param string $action The action to check
      * @return bool true if the action is valid; otherwise, false
      */
-    protected static function isValidAction (string $action) {
+    protected static function isValidAction (string $action) : bool {
         $actions = ['created', 'deleted', 'publicized', 'privatized'];
         return in_array($action, $actions);
     }
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         $action = $this->payload->action;
@@ -57,8 +55,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->repository->html_url;
diff --git a/app/Analyzers/GitHub/Events/StatusEvent.php b/app/Analyzers/GitHub/Events/StatusEvent.php
--- a/app/Analyzers/GitHub/Events/StatusEvent.php
+++ b/app/Analyzers/GitHub/Events/StatusEvent.php
@@ -11,10 +11,8 @@
 
     /**
      * Gets state localized message
-     *
-     * @return string
      */
-    private function getState () {
+    private function getState () : string {
         $state = $this->payload->state; // pending, success, failure, or error
         $key = 'GitHub.StatusEventState.' . $state;
         return trans($key);
@@ -22,10 +20,8 @@
 
     /**
      * Gets status result
-     *
-     * @return string
      */
-    private function getStatusResult () {
+    private function getStatusResult () : string {
         $glue = trans('GitHub.Separator');
         $fragments = array_filter([
             $this->payload->context,
@@ -38,8 +34,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         return trans('GitHub.EventsDescriptions.StatusEvent', [
@@ -50,8 +44,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         $url = $this->payload->target_url;
diff --git a/app/Analyzers/GitHub/Events/UnknownEvent.php b/app/Analyzers/GitHub/Events/UnknownEvent.php
--- a/app/Analyzers/GitHub/Events/UnknownEvent.php
+++ b/app/Analyzers/GitHub/Events/UnknownEvent.php
@@ -27,8 +27,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         return "Some $this->eventType happened";
@@ -36,8 +34,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return "";
diff --git a/app/Analyzers/GitHub/Events/WatchEvent.php b/app/Analyzers/GitHub/Events/WatchEvent.php
--- a/app/Analyzers/GitHub/Events/WatchEvent.php
+++ b/app/Analyzers/GitHub/Events/WatchEvent.php
@@ -17,8 +17,6 @@
 
     /**
      * Gets description for the payload
-     *
-     * @return string
      */
     public function getDescription () : string {
         return trans(
@@ -32,8 +30,6 @@
 
     /**
      * Gets link for the payload
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->payload->sender->html_url;
diff --git a/app/Analyzers/GitHub/Events/WithCommit.php b/app/Analyzers/GitHub/Events/WithCommit.php
--- a/app/Analyzers/GitHub/Events/WithCommit.php
+++ b/app/Analyzers/GitHub/Events/WithCommit.php
@@ -12,9 +12,8 @@
 
     /**
      * Gets the title of the head commit
-     * @return string
      */
-    private function getHeadCommitTitle () {
+    private function getHeadCommitTitle () : string {
         return static::getCommitTitle($this->payload->head_commit->message);
     }
 
@@ -24,7 +23,7 @@
      * @param string $message The commit message
      * @return string The commit title
      */
-    public static function getCommitTitle (string $message) {
+    public static function getCommitTitle (string $message) : string {
         // Discards extra lines
         $pos = strpos($message, "\n");
         if ($pos > 0) {
@@ -38,10 +37,8 @@
 
     /**
      * Gets the description text for the head commit.
-     *
-     * @return string
      */
-    private function getHeadCommitDescription () {
+    private function getHeadCommitDescription () : string {
         $commit = $this->payload->head_commit;
         $committer = $commit->committer->username;
         $author = $commit->author->username;
diff --git a/app/Analyzers/GitHub/Events/WithRef.php b/app/Analyzers/GitHub/Events/WithRef.php
--- a/app/Analyzers/GitHub/Events/WithRef.php
+++ b/app/Analyzers/GitHub/Events/WithRef.php
@@ -19,7 +19,7 @@
      * @param string $type The ref type to check
      * @return bool true if the ref type id valid; otherwise, false
      */
-    protected static function isValidRefType (string $type) {
+    protected static function isValidRefType (string $type) : bool {
         $types = ['branch', 'tag'];
         return in_array($type, $types);
     }
@@ -30,7 +30,7 @@
      * @param string $type The reference type
      * @return string the part of the URL for this reference type (e.g. /tree/)
      */
-    protected function getLinkRefSegment (string $type) {
+    protected function getLinkRefSegment (string $type) : string {
         $segments = $this->getLinkRefSegments();
 
         if (!array_key_exists($type, $segments)) {
diff --git a/app/Analyzers/GitHub/GitHubPayloadAnalyzer.php b/app/Analyzers/GitHub/GitHubPayloadAnalyzer.php
--- a/app/Analyzers/GitHub/GitHubPayloadAnalyzer.php
+++ b/app/Analyzers/GitHub/GitHubPayloadAnalyzer.php
@@ -75,8 +75,6 @@
 
     /**
      * Gets the name of the item, ie here of the name of the repository.
-     *
-     * @var string
      */
     public function getItemName () : string {
         if ($this->isAdministrativeEvent()) {
@@ -90,9 +88,6 @@
     /// Qualification of the payload
     ///
 
-    /**
-     * @return bool
-     */
     public function isAdministrativeEvent () : bool {
         $administrativeEvents = [
             'membership',    // Member added to team
@@ -109,8 +104,6 @@
 
     /**
      * Gets a short textual description of the event.
-     *
-     * @return string
      */
     public function getDescription () : string {
         return $this->analyzerEvent->getDescription();
diff --git a/app/Analyzers/ItemGroupMapping.php b/app/Analyzers/ItemGroupMapping.php
--- a/app/Analyzers/ItemGroupMapping.php
+++ b/app/Analyzers/ItemGroupMapping.php
@@ -49,8 +49,6 @@
 
     /**
      * Determines if the specified item belong to this mapping
-     *
-     * @return bool
      */
     public function doesItemBelong (string $actualItem) : bool {
         foreach ($this->items as $candidateItem) {
diff --git a/app/Analyzers/Jenkins/JenkinsPayloadAnalyzer.php b/app/Analyzers/Jenkins/JenkinsPayloadAnalyzer.php
--- a/app/Analyzers/Jenkins/JenkinsPayloadAnalyzer.php
+++ b/app/Analyzers/Jenkins/JenkinsPayloadAnalyzer.php
@@ -43,9 +43,6 @@
         return true;
     }
 
-    /**
-     * @return bool
-     */
     public function shouldNotifyOnlyOnFailure () : bool {
         return in_array(
             $this->getItemName(),
@@ -55,8 +52,6 @@
 
     /**
      * Determines if the build status is a failure.
-     *
-     * @return bool
      */
     public function isFailure () : bool {
         $status = "";
diff --git a/app/Analyzers/Phabricator/PhabricatorGroupMapping.php b/app/Analyzers/Phabricator/PhabricatorGroupMapping.php
--- a/app/Analyzers/Phabricator/PhabricatorGroupMapping.php
+++ b/app/Analyzers/Phabricator/PhabricatorGroupMapping.php
@@ -24,8 +24,6 @@
 
     /**
      * Determines if the specified story belong to this mapping
-     *
-     * @return bool
      */
     public function doesStoryBelong (PhabricatorStory $story) : bool {
         foreach ($this->words as $word) {
diff --git a/app/Config/Reporting/ServiceReportEntry.php b/app/Config/Reporting/ServiceReportEntry.php
--- a/app/Config/Reporting/ServiceReportEntry.php
+++ b/app/Config/Reporting/ServiceReportEntry.php
@@ -82,8 +82,6 @@
      * Determines if the service matches the following issue to report:
      *   - service is Phabricator
      *   - instance doesn't have the projects' name/PHID map in cache
-     *
-     * @return bool
      */
     protected function isPhabricatorServiceWithNotCachedProjectsMap () : bool {
         if ($this->service->gate !== 'Phabricator') {
diff --git a/app/Config/Services/Services.php b/app/Config/Services/Services.php
--- a/app/Config/Services/Services.php
+++ b/app/Config/Services/Services.php
@@ -36,10 +36,8 @@
 
     /**
      * Gets the services found in credentials.json configuration file.
-     *
-     * @return Service[]
      */
-    public function get () {
+    public function get () : array {
         return $this->services;
     }
 
diff --git a/app/Console/Commands/ConfigShow.php b/app/Console/Commands/ConfigShow.php
--- a/app/Console/Commands/ConfigShow.php
+++ b/app/Console/Commands/ConfigShow.php
@@ -34,7 +34,7 @@
     /**
      * Gets the services (defined in credentials.json) as table rows.
      *
-     * @return array
+     * @return string[][]
      */
     protected function getServicesTableRows () : array {
         $rows = [];
@@ -49,7 +49,7 @@
     /**
      * Gets features as table rows
      *
-     * @return array
+     * @return string[][]
      */
     protected function getFeaturesTableRows () : array {
         $rows = [];
diff --git a/app/Console/Commands/NotificationsPayload.php b/app/Console/Commands/NotificationsPayload.php
--- a/app/Console/Commands/NotificationsPayload.php
+++ b/app/Console/Commands/NotificationsPayload.php
@@ -132,9 +132,9 @@
     /**
      * Formats payload to pass to constructor
      *
-     * @return PhabricatorStory|stdClass A deserialization of the payload
+     * @return PhabricatorStory|\stdClass A deserialization of the payload
      */
-    private function formatPayload() {
+    private function formatPayload() : \stdClass|PhabricatorStory {
         if ($this->service === "Phabricator") {
             $project = $this->constructor['project'];
             return PhabricatorStory::loadFromJson($project, $this->payload);
@@ -171,8 +171,6 @@
     /**
      * Initializes a new instance of the relevant notification class,
      * with the arguments given in the constructor property.
-     *
-     * @return \Nasqueron\Notifications\Notifications\Notification
      */
     private function getNotification () : Notification {
         $class = $this->getNotificationClass();
@@ -182,8 +180,6 @@
 
     /**
      * Gets the notification in JSON format.
-     *
-     * @return string
      */
     private function formatNotification () : string {
         return json_encode($this->getNotification(), JSON_PRETTY_PRINT);
@@ -197,9 +193,7 @@
     }
 
     /**
-     * Gets the notification class for the specified service.
-     *
-     * @return string
+     * Gets the notification class for the specified service
      */
     private function getNotificationClass () : string {
         $namespace = "Nasqueron\Notifications\Notifications\\";
@@ -210,7 +204,7 @@
      * Gets an array with the parameters to pass to the constructor
      * of the notification class for the specified service.
      *
-     * @return array
+     * @return string[]
      */
     private function getNotificationConstructorParameters () : array {
         $parameters = [];
diff --git a/app/Contracts/APIClient.php b/app/Contracts/APIClient.php
--- a/app/Contracts/APIClient.php
+++ b/app/Contracts/APIClient.php
@@ -10,7 +10,7 @@
      * @param string $url The API end point URL
      * @return void
      */
-    public function setEndPoint (string $url);
+    public function setEndPoint (string $url) : void;
 
     /**
      * Calls an API method
@@ -19,6 +19,6 @@
      * @param array $arguments The arguments to use
      * @return mixed The API result
      */
-    public function call (string $method, array $arguments = []);
+    public function call (string $method, array $arguments = []) : mixed;
 
 }
diff --git a/app/Contracts/APIFactory.php b/app/Contracts/APIFactory.php
--- a/app/Contracts/APIFactory.php
+++ b/app/Contracts/APIFactory.php
@@ -8,8 +8,7 @@
      * Gets an instance of the API client class
      *
      * @param string $endPoint The API end point
-     * @return APIClient
      */
-    public function get (string $endPoint);
+    public function get (string $endPoint) : APIClient;
 
 }
diff --git a/app/Events/DockerHubPayloadEvent.php b/app/Events/DockerHubPayloadEvent.php
--- a/app/Events/DockerHubPayloadEvent.php
+++ b/app/Events/DockerHubPayloadEvent.php
@@ -27,8 +27,6 @@
 
     /**
      * Gets event according the kind of payload we receive.
-     *
-     * @return string
      */
     public function getEvent () : string {
         if (isset($this->payload->repository->repo_url)) {
diff --git a/app/Events/PhabricatorPayloadEvent.php b/app/Events/PhabricatorPayloadEvent.php
--- a/app/Events/PhabricatorPayloadEvent.php
+++ b/app/Events/PhabricatorPayloadEvent.php
@@ -29,10 +29,8 @@
 
     /**
      * Gets story from the request
-     *
-     * @return PhabricatorStory
      */
-    protected function getStory () {
+    protected function getStory () : PhabricatorStory {
         return PhabricatorStory::loadFromIterable(
             $this->door,
             $this->payload
diff --git a/app/Exceptions/Handler.php b/app/Exceptions/Handler.php
--- a/app/Exceptions/Handler.php
+++ b/app/Exceptions/Handler.php
@@ -56,8 +56,6 @@
 
     /**
      * Determines if the error handler should report to Sentry
-     *
-     * @return bool
      */
     protected function shouldReportToSentry () : bool {
         return Raven::isConfigured() && Config::get('app.env') !== 'testing';
diff --git a/app/Facades/Broker.php b/app/Facades/Broker.php
--- a/app/Facades/Broker.php
+++ b/app/Facades/Broker.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'broker';
diff --git a/app/Facades/DockerHub.php b/app/Facades/DockerHub.php
--- a/app/Facades/DockerHub.php
+++ b/app/Facades/DockerHub.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'dockerhub';
diff --git a/app/Facades/Mailgun.php b/app/Facades/Mailgun.php
--- a/app/Facades/Mailgun.php
+++ b/app/Facades/Mailgun.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'mailgun';
diff --git a/app/Facades/PhabricatorAPI.php b/app/Facades/PhabricatorAPI.php
--- a/app/Facades/PhabricatorAPI.php
+++ b/app/Facades/PhabricatorAPI.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'phabricator-api';
diff --git a/app/Facades/ProjectsMap.php b/app/Facades/ProjectsMap.php
--- a/app/Facades/ProjectsMap.php
+++ b/app/Facades/ProjectsMap.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'phabricator-projectsmap';
diff --git a/app/Facades/Raven.php b/app/Facades/Raven.php
--- a/app/Facades/Raven.php
+++ b/app/Facades/Raven.php
@@ -12,8 +12,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'raven';
diff --git a/app/Facades/Report.php b/app/Facades/Report.php
--- a/app/Facades/Report.php
+++ b/app/Facades/Report.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'report';
diff --git a/app/Facades/Services.php b/app/Facades/Services.php
--- a/app/Facades/Services.php
+++ b/app/Facades/Services.php
@@ -11,8 +11,6 @@
 
     /**
      * Gets the registered name of the component.
-     *
-     * @return string
      */
     protected static function getFacadeAccessor() : string {
         return 'services';
diff --git a/app/Http/Controllers/Gate/GateController.php b/app/Http/Controllers/Gate/GateController.php
--- a/app/Http/Controllers/Gate/GateController.php
+++ b/app/Http/Controllers/Gate/GateController.php
@@ -67,8 +67,6 @@
 
     /**
      * Renders the report
-     *
-     * @return \Symfony\Component\HttpFoundation\Response
      */
     protected function renderReport () : BaseResponse {
         if (!Features::isEnabled('ActionsReport')) {
diff --git a/app/Jobs/FireJenkinsNotification.php b/app/Jobs/FireJenkinsNotification.php
--- a/app/Jobs/FireJenkinsNotification.php
+++ b/app/Jobs/FireJenkinsNotification.php
@@ -30,8 +30,6 @@
 
     /**
      * Executes the job.
-     *
-     * @return void
      */
     public function handle() : void {
         $notification = $this->createNotification();
diff --git a/app/Jobs/NotifyNewCommitsToDiffusion.php b/app/Jobs/NotifyNewCommitsToDiffusion.php
--- a/app/Jobs/NotifyNewCommitsToDiffusion.php
+++ b/app/Jobs/NotifyNewCommitsToDiffusion.php
@@ -68,8 +68,6 @@
 
     /**
      * Executes the job.
-     *
-     * @return void
      */
     public function handle () : void {
         if (!$this->fetchRequirements()) {
diff --git a/app/Jobs/SendMessageToBroker.php b/app/Jobs/SendMessageToBroker.php
--- a/app/Jobs/SendMessageToBroker.php
+++ b/app/Jobs/SendMessageToBroker.php
@@ -73,8 +73,6 @@
 
     /**
      * Executes the job.
-     *
-     * @return void
      */
     public function handle() : void {
         $this->sendMessage();
diff --git a/app/Jobs/TriggerDockerHubBuild.php b/app/Jobs/TriggerDockerHubBuild.php
--- a/app/Jobs/TriggerDockerHubBuild.php
+++ b/app/Jobs/TriggerDockerHubBuild.php
@@ -46,8 +46,6 @@
 
     /**
      * Executes the job.
-     *
-     * @return void
      */
     public function handle () : void {
         $this->initializeReport();
diff --git a/app/Notifications/DockerHubNotification.php b/app/Notifications/DockerHubNotification.php
--- a/app/Notifications/DockerHubNotification.php
+++ b/app/Notifications/DockerHubNotification.php
@@ -59,8 +59,6 @@
 
     /**
      * Gets analyzer class name for the current event.
-     *
-     * @return string
      */
     private function getAnalyzerClassName () : string {
         return "Nasqueron\Notifications\Analyzers\DockerHub\\"
@@ -70,8 +68,6 @@
 
     /**
      * Gets analyzer for the current event.
-     *
-     * @return \Nasqueron\Notifications\Analyzers\DockerHub\BaseEvent
      */
     private function getAnalyzer () : BaseEvent {
         $class = $this->getAnalyzerClassName();
diff --git a/app/Notifications/GitHubNotification.php b/app/Notifications/GitHubNotification.php
--- a/app/Notifications/GitHubNotification.php
+++ b/app/Notifications/GitHubNotification.php
@@ -54,8 +54,6 @@
     /**
      * Gets the notification text.
      * Intended to convey a short message (thing Twitter or IRC).
-     *
-     * @return string
      */
     public function getText () : string {
         return $this->getAnalyzer()->getDescription();
@@ -63,8 +61,6 @@
 
     /**
      * Gets the notification URL. Intended to be a widget or icon link.
-     *
-     * @return string
      */
     public function getLink () : string {
         return $this->getAnalyzer()->getLink();
diff --git a/app/Notifications/JenkinsNotification.php b/app/Notifications/JenkinsNotification.php
--- a/app/Notifications/JenkinsNotification.php
+++ b/app/Notifications/JenkinsNotification.php
@@ -38,8 +38,6 @@
 
     /**
      * Gets the notification type.
-     *
-     * @return string
      */
     public function getType () : string {
         $build = $this->rawContent->build;
@@ -57,8 +55,6 @@
     /**
      * Gets the notification text. Intended to convey a short message
      * (thing Twitter or IRC).
-     *
-     * @return string
      */
     public function getText () : string {
         $name = $this->rawContent->name;
@@ -78,8 +74,6 @@
 
     /**
      * Gets analyzer
-     *
-     * @return \Nasqueron\Notifications\Analyzers\Jenkins\JenkinsPayloadAnalyzer
      */
     private function getAnalyzer () : JenkinsPayloadAnalyzer {
         if ($this->analyzer === null) {
@@ -93,8 +87,6 @@
 
     /**
      * Gets the notification group.
-     *
-     * @return string
      */
     public function getGroup () : string {
         return $this->getAnalyzer()->getGroup();
diff --git a/app/Notifications/PhabricatorNotification.php b/app/Notifications/PhabricatorNotification.php
--- a/app/Notifications/PhabricatorNotification.php
+++ b/app/Notifications/PhabricatorNotification.php
@@ -33,8 +33,6 @@
 
     /**
      * Gets analyzer
-     *
-     * @return \Nasqueron\Notifications\Analyzers\Phabricator\PhabricatorPayloadAnalyzer
      */
     private function getAnalyzer () : PhabricatorPayloadAnalyzer {
         if ($this->analyzer === null) {
@@ -57,8 +55,6 @@
 
     /**
      * Gets the notification URL. Intended to be a widget or icon link.
-     *
-     * @return string
      */
     public function getLink () : string {
         return "";
diff --git a/app/Phabricator/PhabricatorAPI.php b/app/Phabricator/PhabricatorAPI.php
--- a/app/Phabricator/PhabricatorAPI.php
+++ b/app/Phabricator/PhabricatorAPI.php
@@ -60,7 +60,7 @@
     /**
      * @throws \RuntimeException when the service isn't in credentials.json
      */
-    public static function forProject ($project) {
+    public static function forProject ($project) : PhabricatorAPI {
         $service = Services::findServiceByDoor('Phabricator', $project);
         if ($service === null) {
             throw new \RuntimeException(
@@ -79,7 +79,7 @@
      *
      * @param string $url The API end point URL
      */
-    public function setEndPoint (string $url) {
+public function setEndPoint (string $url) : void {
         $this->endPoint = $url;
     }
 
@@ -91,7 +91,7 @@
      *
      * @return mixed The API result
      */
-    public function call (string $method, array $arguments = []) {
+    public function call (string $method, array $arguments = []) : mixed {
         $url = $this->endPoint . '/api/' . $method;
         $arguments['api.token'] = $this->apiToken;
 
@@ -113,11 +113,8 @@
 
     /**
      * Gets the first result of an API reply.
-     *
-     * @param iterable $reply
-     * @return mixed
      */
-    public static function getFirstResult (iterable $reply) {
+    public static function getFirstResult (iterable $reply) : mixed {
         if (is_object($reply) && property_exists($reply, 'data')) {
             $reply = $reply->data;
         }
@@ -131,7 +128,7 @@
     /// CURL session
     ///
 
-    protected static function getPostFields ($arguments) {
+    protected static function getPostFields ($arguments) : string {
         $items = [];
         foreach ($arguments as $key => $value) {
             $items[] = urlencode($key) . '=' . urlencode($value);
@@ -139,7 +136,7 @@
         return implode('&', $items);
     }
 
-    protected static function post ($url, $arguments) {
+    protected static function post ($url, $arguments) : bool|string {
         $options = [
             CURLOPT_URL => $url,
             CURLOPT_HEADER => false,
diff --git a/app/Phabricator/PhabricatorAPIFactory.php b/app/Phabricator/PhabricatorAPIFactory.php
--- a/app/Phabricator/PhabricatorAPIFactory.php
+++ b/app/Phabricator/PhabricatorAPIFactory.php
@@ -12,7 +12,7 @@
      * @param string $instance The Phabricator instance
      * @return \Nasqueron\Notifications\Phabricator\PhabricatorAPI
      */
-    public function get (string $instance) {
+    public function get (string $instance) : PhabricatorAPI {
         return PhabricatorAPI::forInstance($instance);
     }
 
@@ -22,7 +22,7 @@
      * @param string $project The Phabricator project name
      * @return PhabricatorAPI
      */
-    public function getForProject (string $project) {
+    public function getForProject (string $project) : PhabricatorAPI {
         return PhabricatorAPI::forProject($project);
     }
 }
diff --git a/app/Phabricator/PhabricatorStory.php b/app/Phabricator/PhabricatorStory.php
--- a/app/Phabricator/PhabricatorStory.php
+++ b/app/Phabricator/PhabricatorStory.php
@@ -91,7 +91,7 @@
      */
     public static function loadFromIterable (
         string $instanceName, iterable $payload
-    ) {
+    ) : PhabricatorStory {
         $instance = new self($instanceName);
 
         foreach ($payload as $key => $value) {
@@ -105,7 +105,7 @@
     public static function loadFromJson (
         $instanceName,
         $payload
-    ) {
+    ) : PhabricatorStory {
         $array = json_decode($payload, true);
 
         if (!is_array($array)) {
@@ -131,7 +131,7 @@
      *
      * @return string The object type, as a 4 letters string (e.g. 'TASK')
      */
-    public function getObjectType () {
+    public function getObjectType () : string {
         if ($this->hasVoidObjectType()) {
             return 'VOID';
         }
@@ -144,7 +144,7 @@
      *
      * return string[] The list of project PHIDs
      */
-    public function getProjectsPHIDs () {
+    public function getProjectsPHIDs () : array {
         if (!array_key_exists('objectPHID', $this->data)) {
             return [];
         }
@@ -188,7 +188,7 @@
      * @param string $method The API method to call (e.g. differential.query)
      * @return string The repository PHID or "" if not found
      */
-    public function getRepositoryPHID (string $method) {
+    public function getRepositoryPHID (string $method) : string {
         $objectPHID = $this->data['objectPHID'];
 
         $api = PhabricatorAPI::forProject($this->instanceName);
@@ -220,7 +220,7 @@
      * @param string $objectPHID The object PHID to pass as method parameter
      * @return string[] The list of project PHIDs
      */
-    public function getItemProjectsPHIDs (string $method, string $objectPHID) {
+    public function getItemProjectsPHIDs (string $method, string $objectPHID) : array {
         if (!$objectPHID) {
             return [];
         }
@@ -248,7 +248,7 @@
      protected function getItemProjectsPHIDsThroughApplicationSearch  (
          $method,
          $objectPHID
-     ) {
+     ) : array {
         if (!$objectPHID) {
             return [];
         }
@@ -279,7 +279,7 @@
      *
      * @return string[] The list of project PHIDs
      */
-    public function getProjects () {
+    public function getProjects () : array {
         if ($this->projects === null) {
             $this->attachProjects();
         }
@@ -290,7 +290,7 @@
      * Queries the list of the projects associated to the story
      * and attached it to the projects property.
      */
-    public function attachProjects () {
+    public function attachProjects () : void {
         $this->projects = [];
 
         $PHIDs = $this->getProjectsPHIDs();
@@ -316,7 +316,7 @@
      * @param string $key The field of the API reply
      * @return string The property's name
      */
-    public static function mapPhabricatorFeedKey (string $key) {
+    public static function mapPhabricatorFeedKey (string $key) : string {
         if ($key == "storyID") {
             return "id";
         }
diff --git a/app/Phabricator/ProjectsMap.php b/app/Phabricator/ProjectsMap.php
--- a/app/Phabricator/ProjectsMap.php
+++ b/app/Phabricator/ProjectsMap.php
@@ -64,10 +64,8 @@
 
     /**
      * Gets iterator.
-     *
-     * @return \Traversable
      */
-    public function getIterator () {
+    public function getIterator () : \Traversable {
         return new \ArrayIterator($this->map);
     }
 
@@ -81,7 +79,7 @@
      * @param mixed $offset The offset
      * @return bool
      */
-    public function offsetExists (mixed $offset) {
+    public function offsetExists (mixed $offset) : bool {
         return array_key_exists($offset, $this->map);
     }
 
@@ -91,7 +89,7 @@
      * @param mixed $offset The offset.
      * @return mixed The value
      */
-    public function offsetGet (mixed $offset) {
+    public function offsetGet (mixed $offset) : mixed {
         return $this->map[$offset];
     }
 
@@ -124,7 +122,7 @@
      * @param string $phabricatorInstanceName The Phabricator instance name
      * @return ProjectsMap
      */
-    public static function load (string $phabricatorInstanceName) {
+    public static function load (string $phabricatorInstanceName) : ProjectsMap {
         $instance = new self($phabricatorInstanceName);
 
         if ($instance->isCached()) {
@@ -142,7 +140,7 @@
     public static function fetch (
         string $phabricatorInstanceName,
         ?APIClient $apiClient = null
-    ) {
+    ) : ProjectsMap {
         $instance = new self($phabricatorInstanceName);
         $instance->setAPIClient($apiClient);
         $instance->fetchFromAPI();
@@ -153,10 +151,7 @@
     /// API
     ///
 
-    /**
-     * @return \Nasqueron\Notifications\Contracts\APIClient
-     */
-    public function getAPIClient () {
+    public function getAPIClient () : APIClient {
         if ($this->apiClient === null) {
             $factory = App::make('phabricator-api');
             $this->apiClient = $factory->getForProject($this->instanceName);
@@ -164,10 +159,7 @@
         return $this->apiClient;
     }
 
-    /**
-     * @param \Nasqueron\Notifications\Contracts\APIClient|null $apiClient
-     */
-    public function setAPIClient (?APIClient $apiClient = null) {
+    public function setAPIClient (?APIClient $apiClient = null) : void {
         $this->apiClient = $apiClient;
     }
 
@@ -212,7 +204,7 @@
      *
      * @return string The cache key for the current projects map
      */
-    private function getCacheKey () {
+    private function getCacheKey () : string {
         return class_basename(get_class($this))
                . '-'
                . md5($this->instanceName);
@@ -223,7 +215,7 @@
      *
      * @return bool true if cached; otherwise, false.
      */
-    public function isCached () {
+    public function isCached () : bool {
         return Cache::has($this->getCacheKey());
     }
 
@@ -257,7 +249,7 @@
      * @param string $projectPHID the PHID of the project to query the name
      * @return string The name of the poject, or an empty string if not found
      */
-    public function getProjectName (string $projectPHID) {
+    public function getProjectName (string $projectPHID) : string {
         if ($this->offsetExists($projectPHID)) {
             return $this->offsetGet($projectPHID);
         }
@@ -273,9 +265,9 @@
     /**
      * Returns the projects map as an array.
      *
-     * @return array An array, each row containing ['PHID', 'project name']
+     * @return array[] An array, each row containing ['PHID', 'project name']
      */
-    public function toArray () {
+    public function toArray () : array {
         $array = [];
         foreach ($this->map as $phid => $projectName) {
             $array[] = [$phid, $projectName];
diff --git a/app/Phabricator/ProjectsMapFactory.php b/app/Phabricator/ProjectsMapFactory.php
--- a/app/Phabricator/ProjectsMapFactory.php
+++ b/app/Phabricator/ProjectsMapFactory.php
@@ -10,7 +10,7 @@
      * @param string $instanceName The Phabricator instance name
      * @return ProjectsMap
      */
-    public function load (string $instanceName) {
+    public function load (string $instanceName) : ProjectsMap {
         return ProjectsMap::load($instanceName);
     }
 
@@ -20,7 +20,7 @@
      * @param string $instanceName The Phabricator instance name
      * @return ProjectsMap
      */
-    public function fetch (string $instanceName) {
+    public function fetch (string $instanceName) : ProjectsMap {
         return ProjectsMap::fetch($instanceName);
     }
 
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -8,19 +8,15 @@
 
     /**
      * Bootstrap any application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
         //
     }
 
     /**
      * Register any application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         //
     }
 }
diff --git a/app/Providers/BrokerServiceProvider.php b/app/Providers/BrokerServiceProvider.php
--- a/app/Providers/BrokerServiceProvider.php
+++ b/app/Providers/BrokerServiceProvider.php
@@ -11,18 +11,14 @@
 
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('broker', function (Application $app) {
             $config = $app->make('config');
             $driver = $config->get('broker.driver');
diff --git a/app/Providers/DockerHubServiceProvider.php b/app/Providers/DockerHubServiceProvider.php
--- a/app/Providers/DockerHubServiceProvider.php
+++ b/app/Providers/DockerHubServiceProvider.php
@@ -12,10 +12,8 @@
 class DockerHubServiceProvider extends ServiceProvider {
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
@@ -24,7 +22,7 @@
      * @param \Illuminate\Contracts\Foundation\Application $app
      * @return array
      */
-    public static function getTokens (Application $app) {
+    public static function getTokens (Application $app) : array {
         $file = $app->make('config')->get('services.dockerhub.tokens');
         $fs = $app->make('filesystem')->disk('local');
 
@@ -38,10 +36,8 @@
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('dockerhub', function (Application $app) {
             $tokens = DockerHubServiceProvider::getTokens($app);
             return new TriggerBuildFactory(new Client, $tokens);
diff --git a/app/Providers/MailgunServiceProvider.php b/app/Providers/MailgunServiceProvider.php
--- a/app/Providers/MailgunServiceProvider.php
+++ b/app/Providers/MailgunServiceProvider.php
@@ -11,18 +11,14 @@
 class MailgunServiceProvider extends ServiceProvider {
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('mailgun', function (Application $app) {
             $config = $app->make('config');
             $key = $config->get('services.mailgun.secret');
diff --git a/app/Providers/PhabricatorAPIServiceProvider.php b/app/Providers/PhabricatorAPIServiceProvider.php
--- a/app/Providers/PhabricatorAPIServiceProvider.php
+++ b/app/Providers/PhabricatorAPIServiceProvider.php
@@ -10,18 +10,14 @@
 
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('phabricator-api', static function () {
             return new PhabricatorAPIFactory;
         });
diff --git a/app/Providers/PhabricatorProjectsMapServiceProvider.php b/app/Providers/PhabricatorProjectsMapServiceProvider.php
--- a/app/Providers/PhabricatorProjectsMapServiceProvider.php
+++ b/app/Providers/PhabricatorProjectsMapServiceProvider.php
@@ -10,18 +10,14 @@
 
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('phabricator-projectsmap', static function () {
             return new ProjectsMapFactory;
         });
diff --git a/app/Providers/ReportServiceProvider.php b/app/Providers/ReportServiceProvider.php
--- a/app/Providers/ReportServiceProvider.php
+++ b/app/Providers/ReportServiceProvider.php
@@ -12,10 +12,8 @@
 class ReportServiceProvider extends ServiceProvider {
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('report', function (Application $app) {
             $report = new ActionsReport();
             static::listenToActionsForReport(
@@ -29,7 +27,7 @@
     public static function listenToActionsForReport (
         ActionsReport $report,
         Dispatcher $events
-    ) {
+    ) : void {
         $events->listen(
             'Nasqueron\Notifications\Events\ReportEvent',
             static function (ReportEvent $event) use ($report) {
diff --git a/app/Providers/RouteServiceProvider.php b/app/Providers/RouteServiceProvider.php
--- a/app/Providers/RouteServiceProvider.php
+++ b/app/Providers/RouteServiceProvider.php
@@ -18,10 +18,8 @@
 
     /**
      * Define your route model bindings, pattern filters, etc.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
         //
 
         parent::boot();
@@ -33,7 +31,7 @@
      * @param  \Illuminate\Routing\Router  $router
      * @return void
      */
-    public function map(Router $router) {
+    public function map(Router $router) : void {
         $router->group(['namespace' => $this->namespace], static function ($router) {
             require app_path('Http/routes.php');
         });
diff --git a/app/Providers/SentryServiceProvider.php b/app/Providers/SentryServiceProvider.php
--- a/app/Providers/SentryServiceProvider.php
+++ b/app/Providers/SentryServiceProvider.php
@@ -9,18 +9,14 @@
 
     /**
      * Bootstraps the application services.
-     *
-     * @return void
      */
-    public function boot() {
+    public function boot() : void {
     }
 
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('raven', function (Application $app) {
             $config = $app->make('config');
             $dsn = $config->get('services.sentry.dsn');
diff --git a/app/Providers/ServicesServiceProvider.php b/app/Providers/ServicesServiceProvider.php
--- a/app/Providers/ServicesServiceProvider.php
+++ b/app/Providers/ServicesServiceProvider.php
@@ -10,10 +10,8 @@
 class ServicesServiceProvider extends ServiceProvider {
     /**
      * Registers the application services.
-     *
-     * @return void
      */
-    public function register() {
+    public function register() : void {
         $this->app->singleton('services', function (Application $app) {
             $path = config('services.gate.credentials');
             if (strlen($path) > 0 && $app->make('filesystem')->has($path)) {
diff --git a/tests/Phabricator/ProjectsMapTest.php b/tests/Phabricator/ProjectsMapTest.php
--- a/tests/Phabricator/ProjectsMapTest.php
+++ b/tests/Phabricator/ProjectsMapTest.php
@@ -177,7 +177,7 @@
 
             public function setEndPoint ($url) : void { }
 
-            public function call ($method, $arguments = []) {
+            public function call ($method, $arguments = []) : mixed {
                 return $this->reply;
             }
         });