diff --git a/flatpak/hu.kramo.Cartridges.Devel.json b/flatpak/hu.kramo.Cartridges.Devel.json
index 1acbf0b..e070b14 100644
--- a/flatpak/hu.kramo.Cartridges.Devel.json
+++ b/flatpak/hu.kramo.Cartridges.Devel.json
@@ -30,7 +30,8 @@
         "*.la",
         "*.a",
         "*.pyc",
-        "__pycache__"
+        "__pycache__",
+        "Cartridges.iss"
     ],
     "modules" : [
         {