diff --git a/META.json b/META.json
index 096c96b81..5b26104f4 100644
--- a/META.json
+++ b/META.json
@@ -56,7 +56,7 @@
       }
    },
    "release_status" : "unstable",
-   "version" : "4.0.0",
+   "version" : "4.0.1",
    "x_contributors" : [
       "azumakuniyuki <perl.org@azumakuniyuki.org>"
    ]