diff --git a/system.json b/system.json
index 248653b..5eccaa2 100644
--- a/system.json
+++ b/system.json
@@ -153,5 +153,10 @@
   "templateVersion": 18,
   "title": "Mournblade",
   "url": "https://www.uberwald.me/gitea/public/fvtt-mournblade",
-  "background": "systems/fvtt-mournblade/assets/ui/fond_mournblade.webp"
+  "background": "systems/fvtt-mournblade/assets/ui/fond_mournblade.webp",
+  "compatibility": {
+    "minimum": "10",
+    "verified": "10.285",
+    "maximum": "10"
+  },
 }
\ No newline at end of file