diff --git a/webext/manifest.json b/webext/manifest.json
index dadf57d..2742d88 100644
--- a/webext/manifest.json
+++ b/webext/manifest.json
@@ -10,7 +10,7 @@
     "gecko": {
       "id": "systray-x@Ximi1970",
       "strict_min_version": "91.0",
-      "strict_max_version": "998.*"
+      "strict_max_version": "998.0"
     }
   },