diff --git a/CanvasBlocker@kkapsner.de-0.2.2-OtherRelease.xpi b/CanvasBlocker@kkapsner.de-0.2.2-OtherRelease.xpi
new file mode 100644
index 0000000..d51e036
Binary files /dev/null and b/CanvasBlocker@kkapsner.de-0.2.2-OtherRelease.xpi differ
diff --git a/canvasblocker.xpi b/canvasblocker.xpi
deleted file mode 100644
index 90618e2..0000000
Binary files a/canvasblocker.xpi and /dev/null differ
diff --git a/package.json b/package.json
index f1a2389..0ebe6b3 100644
--- a/package.json
+++ b/package.json
@@ -104,9 +104,16 @@
 			"value": ""
 		}
 	],
+	"engines": {
+		"firefox": ">=38.0a1",
+		"fennec": ">=38.0a1",
+		"thunderbird": ">=38.0a1",
+		"seamonkey": ">=2.0",
+		"{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}": ">=25"
+	},
 	"main": "lib/main.js",
 	"author": "Korbinian Kapsner",
 	"license": "MPL 2.0",
-	"version": "0.2.2-Release",
+	"version": "0.2.2-OtherRelease",
 	"permissions": {"private-browsing": true}
 }