diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 160debc03..d9b5d8cc2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ on:
       - dev
       - ci-*
   schedule:
-    - cron: '0 0,3,6,9,12,15,18,21 * * *'
+    - cron: '0 0 * * *'
   workflow_dispatch:
 
 env:
@@ -232,49 +232,3 @@ jobs:
         shell: sh
         # TODO: OCI runtime exec failed: exec failed: unable to start container process: exec: "sh": executable file not found in $PATH: unknown
         if: (!startsWith(matrix.container, 'opensuse'))
-
-  manifest:
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    permissions:
-      contents: read
-      pull-requests: write # for gh pr review --approve
-    steps:
-      - uses: taiki-e/checkout-action@v1
-      - uses: taiki-e/github-actions/install-rust@stable
-      - name: Generate Cargo.lock
-        run: cargo update
-      - uses: Swatinem/rust-cache@v2
-        with:
-          cache-all-crates: 'true'
-      - run: tools/manifest.sh
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Handle diff
-        id: diff
-        run: tools/ci/manifest.sh
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main')
-      - run: git add -N . && git diff --exit-code
-      - id: create-pull-request
-        uses: peter-evans/create-pull-request@v7
-        with:
-          title: Update manifest
-          body: |
-            Auto-generated by CI using [create-pull-request](https://github.com/peter-evans/create-pull-request).
-
-            This will be auto-merged when CI has passed because this is an auto-generated PR in a defined format and is usually considered no additional review is required.
-          branch: update-manifest
-          token: ${{ secrets.CREATE_PR_TOKEN }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false'
-      - name: Enable auto-merge for auto-generated PR
-        run: gh pr merge --rebase --auto "${PR_NUMBER:?}"
-        env:
-          GITHUB_TOKEN: ${{ secrets.CREATE_PR_TOKEN }}
-          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && steps.create-pull-request.outputs.pull-request-operation == 'created'
-      - name: Approve auto-generated PR for auto-merge
-        run: gh pr review --approve "${PR_NUMBER:?}"
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
-        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && (steps.create-pull-request.outputs.pull-request-operation == 'created' || steps.create-pull-request.outputs.pull-request-operation == 'updated')
diff --git a/.github/workflows/manifest.yml b/.github/workflows/manifest.yml
new file mode 100644
index 000000000..301a2411c
--- /dev/null
+++ b/.github/workflows/manifest.yml
@@ -0,0 +1,79 @@
+name: Manifest
+
+permissions:
+  contents: read
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - dev
+      - ci-*
+  schedule:
+    - cron: '0 0,3,6,9,12,15,18,21 * * *'
+  workflow_dispatch:
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_GIT_FETCH_WITH_CLI: true
+  CARGO_NET_RETRY: 10
+  CARGO_TERM_COLOR: always
+  RUST_BACKTRACE: 1
+  RUSTFLAGS: -D warnings
+  RUSTUP_MAX_RETRIES: 10
+
+defaults:
+  run:
+    shell: bash --noprofile --norc -CeEuxo pipefail {0}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  manifest:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    permissions:
+      contents: read
+      pull-requests: write # for gh pr review --approve
+    steps:
+      - uses: taiki-e/checkout-action@v1
+      - uses: taiki-e/github-actions/install-rust@stable
+      - name: Generate Cargo.lock
+        run: cargo update
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-all-crates: 'true'
+      - run: tools/manifest.sh
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Handle diff
+        id: diff
+        run: tools/ci/manifest.sh
+        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main')
+      - run: git add -N . && git diff --exit-code
+      - id: create-pull-request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          title: Update manifest
+          body: |
+            Auto-generated by CI using [create-pull-request](https://github.com/peter-evans/create-pull-request).
+
+            This will be auto-merged when CI has passed because this is an auto-generated PR in a defined format and is usually considered no additional review is required.
+          branch: update-manifest
+          token: ${{ secrets.CREATE_PR_TOKEN }}
+        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false'
+      - name: Enable auto-merge for auto-generated PR
+        run: gh pr merge --rebase --auto "${PR_NUMBER:?}"
+        env:
+          GITHUB_TOKEN: ${{ secrets.CREATE_PR_TOKEN }}
+          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
+        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && steps.create-pull-request.outputs.pull-request-operation == 'created'
+      - name: Approve auto-generated PR for auto-merge
+        run: gh pr review --approve "${PR_NUMBER:?}"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUMBER: ${{ steps.create-pull-request.outputs.pull-request-number }}
+        if: github.repository_owner == 'taiki-e' && (github.event_name == 'schedule' || github.event_name == 'push' && github.ref == 'refs/heads/main') && steps.diff.outputs.success == 'false' && (steps.create-pull-request.outputs.pull-request-operation == 'created' || steps.create-pull-request.outputs.pull-request-operation == 'updated')