diff --git a/bucket/gauche.json b/bucket/gauche.json
index f6ff2afc24..aef3973a1b 100644
--- a/bucket/gauche.json
+++ b/bucket/gauche.json
@@ -1,16 +1,16 @@
 {
-    "version": "0.9.11",
+    "version": "0.9.11-p1",
     "description": "Scheme Scripting Engine",
     "homepage": "https://practical-scheme.net/gauche/",
     "license": "BSD-3-Clause",
     "architecture": {
         "64bit": {
-            "url": "https://github.com/shirok/Gauche/releases/download/release0_9_11/Gauche-mingw-0.9.11-64bit.msi",
-            "hash": "ef91ec769e0e9456eae4786545081b704c26aee454700d7f705b00ad4b8065a4"
+            "url": "https://github.com/shirok/Gauche/releases/download/release0_9_11_p1/Gauche-mingw-0.9.11-p1-64bit.msi",
+            "hash": "c2cc6e99753c371b3c2eb509ffb4a3ff808e63e2da50f1dcbe3c2b0f42299d4c"
         },
         "32bit": {
-            "url": "https://github.com/shirok/Gauche/releases/download/release0_9_11/Gauche-mingw-0.9.11-32bit.msi",
-            "hash": "37c5247e3c48ed723556bc4db16d98ed75050945b2e28ec70584f0584d2b6c8e"
+            "url": "https://github.com/shirok/Gauche/releases/download/release0_9_11_p1/Gauche-mingw-0.9.11-p1-32bit.msi",
+            "hash": "e7d0b0fbb506dffb9cab2eda2708bec8e29e7e8960b410f760d1990222a7a07c"
         }
     },
     "extract_dir": "Gauche",
@@ -30,7 +30,7 @@
     ],
     "checkver": {
         "github": "https://github.com/shirok/Gauche",
-        "regex": "mingw-([\\d.]+)-\\d+bit\\.msi"
+        "regex": "mingw-([\\d.\\-p]+)-\\d+bit\\.msi"
     },
     "autoupdate": {
         "architecture": {