diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9e100a57..fdec37d1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -180,10 +180,8 @@ jobs:
       - run: tools/manifest.sh
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - run: git add -N . && git diff --exit-code
-        if: github.repository_owner != 'taiki-e' || github.event_name != 'schedule' && !(github.event_name == 'push' && github.ref == 'refs/heads/main')
       - id: diff
-        run: ci/manifest.sh
+        run: tools/ci/manifest.sh
         if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main')
       - uses: peter-evans/create-pull-request@v5
         with:
@@ -193,3 +191,4 @@ jobs:
           branch: update-manifest
           token: ${{ secrets.CREATE_PR_TOKEN }}
         if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false'
+      - run: git add -N . && git diff --exit-code
diff --git a/ci/manifest.sh b/tools/ci/manifest.sh
similarity index 97%
rename from ci/manifest.sh
rename to tools/ci/manifest.sh
index c550c3fc..ac2cb09d 100755
--- a/ci/manifest.sh
+++ b/tools/ci/manifest.sh
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 set -euxo pipefail
 IFS=$'\n\t'
-cd "$(dirname "$0")"/..
+cd "$(dirname "$0")"/../..
 
 bail() {
     echo >&2 "error: $*"