diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ef161719..b2163b11 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,8 +22,6 @@ env:
   RUST_BACKTRACE: 1
   RUSTFLAGS: -D warnings
   RUSTUP_MAX_RETRIES: 10
-  # NB: sync with miri job's --exclude option
-  EXCLUDE: --exclude install-action-internal-codegen
 
 defaults:
   run:
@@ -38,12 +36,18 @@ jobs:
     uses: taiki-e/github-actions/.github/workflows/miri.yml@main
     with:
       event_name: ${{ github.event_name }}
-      # NB: sync with env.EXCLUDE
+      # NB: sync with test job's --exclude option
       args: --exclude install-action-internal-codegen
   msrv:
     uses: taiki-e/github-actions/.github/workflows/msrv.yml@main
     with:
       event_name: ${{ github.event_name }}
+  test-manifest-schema:
+    uses: taiki-e/github-actions/.github/workflows/test.yml@main
+    with:
+      # NB: sync with miri job's --exclude option
+      test-args: --exclude install-action-internal-codegen
+      no-std: false
   tidy:
     uses: taiki-e/github-actions/.github/workflows/tidy.yml@main
     permissions:
@@ -277,25 +281,3 @@ jobs:
           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')
-
-  manifest-schema:
-    strategy:
-      fail-fast: false
-      matrix:
-        rust:
-          - stable
-          - beta
-          - nightly
-    runs-on: ubuntu-latest
-    timeout-minutes: 60
-    steps:
-      - uses: taiki-e/checkout-action@v1
-      - uses: taiki-e/github-actions/install-rust@main
-        with:
-          toolchain: ${{ matrix.rust }}
-      - uses: taiki-e/install-action@cargo-hack
-      - uses: taiki-e/install-action@cargo-minimal-versions
-      - run: cargo test --workspace --all-features ${EXCLUDE}
-      - run: cargo hack build --workspace --no-private --feature-powerset --no-dev-deps
-      - run: cargo minimal-versions build --workspace --no-private --detach-path-deps=skip-exact --all-features
-      - run: cargo minimal-versions build --workspace --no-private --detach-path-deps=skip-exact --all-features --direct