diff --git a/manifest.json b/manifest.json
index 0f8d488..6cd7c7a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -15,7 +15,7 @@
   },
   "applications": {
     "gecko": {
-      "strict_min_version": "59.0a1",
+      "strict_min_version": "60.0a1",
       "update_url": "https://raw.githubusercontent.com/kesselborn/conex/master/versions.json"
     }
   },