diff --git a/menu-labelled-open/manifest.json b/menu-labelled-open/manifest.json
index 301c085..d5b3b2d 100644
--- a/menu-labelled-open/manifest.json
+++ b/menu-labelled-open/manifest.json
@@ -4,6 +4,11 @@
   "name": "Labelled open",
   "description": "Adds a context menu item that labels links with the hostname. Demo of onShown and refresh().",
   "version": "1.0",
+  "applications": {
+    "gecko": {
+      "strict_min_version": "60.0a1"
+    }
+  },
   "icons": {
     "16": "icon/label.svg",
     "32": "icon/label.svg",