diff --git a/extension.json b/extension.json
index 49bd511c..c334db58 100644
--- a/extension.json
+++ b/extension.json
@@ -55,5 +55,6 @@
 		"InterwikiHooks": "Interwiki_hooks.php",
 		"SpecialInterwiki": "Interwiki_body.php",
 		"InterwikiLogFormatter": "Interwiki_body.php"
-	}
+	},
+	"manifest_version": 1
 }