diff --git a/renovate.json5 b/renovate.json5
index 7dac1bf1..b48b181b 100644
--- a/renovate.json5
+++ b/renovate.json5
@@ -3,6 +3,7 @@
   "extends": [
     "config:base"
   ],
+  "timezone": "Asia/Tokyo",
   "automerge": true,
   "platformAutomerge": true,
   "git-submodules": {
@@ -12,7 +13,12 @@
   "packageRules": [
     {
       "matchPackagePatterns": ["^line-openapi$"],
-      "labels": ["dependency upgrade", "line-openapi-update"]
+      "labels": ["dependency upgrade", "line-openapi-update"],
+      // In many cases, we would like to update line-openapi by dispatching the GitHub workflow during working
+      // hours, as there are code changes.
+      // If that is forgotten, there's a possibility that line-openapi updates or code changes won't happen at
+      // all, so we allow it to run at night just in case.
+      "schedule": ["after 11pm and before 4am"]
     }
   ]
 }