diff --git a/composer.json b/composer.json
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "keruald/github": "^0.2.1",
     "keruald/broker": "^0.4.1",
     "keruald/mailgun": "^0.0.1",
-    "netresearch/jsonmapper": "~0.1.0",
+    "netresearch/jsonmapper": "^1.1.1",
     "sentry/sentry": "^0.13.0"
   },
   "require-dev": {