diff --git a/firefox_manifest-extra.json b/firefox_manifest-extra.json
new file mode 100644
index 00000000..7625cd66
--- /dev/null
+++ b/firefox_manifest-extra.json
@@ -0,0 +1,8 @@
+{
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "sponsorBlocker@ajay.app",
+      "strict_min_version": "57.0"
+    }
+  }
+}
diff --git a/manifest.json b/manifest.json
index de3b67a7..e7fae867 100644
--- a/manifest.json
+++ b/manifest.json
@@ -65,11 +65,5 @@
     "128": "icons/LogoSponsorBlocker128px.png",
     "256": "icons/LogoSponsorBlocker256px.png"
   },
-  "browser_specific_settings": {
-    "gecko": {
-      "id": "sponsorBlocker@ajay.app",
-      "strict_min_version": "57.0"
-    }
-  },
   "manifest_version": 2
 }