diff --git a/CloudronManifest.json b/CloudronManifest.json
index 8739dfd..f3b94d2 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -19,9 +19,9 @@
   "manifestVersion": 2,
   "website": "https://matrix.org",
   "contactEmail": "support@cloudron.io",
-  "icon": "logo.png",
+  "icon": "file://logo.png",
   "tags": [
-    "im", "collaboration", "voip", "videochat", "chat"
+    "im", "collaboration", "voip", "videochat", "chat", "slack"
   ],
   "mediaLinks": [
     "https://cloudron-app-screenshots.s3.amazonaws.com/org.matrix.synapse/606cd9d4ccc3bee11a49f91444a2dad8947cbc7c/1.png",
@@ -30,7 +30,8 @@
   ],
   "changelog": "file://CHANGELOG",
   "postInstallMessage": "file://POSTINSTALL.md",
-  "minBoxVersion": "5.1.4",
+  "minBoxVersion": "5.3.0",
+  "forumUrl": "https://forum.cloudron.io/category/50/matrix-synapse-riot",
   "documentationUrl": "https://cloudron.io/documentation/apps/synapse/",
   "optionalSso": true
 }