diff --git a/.github/workflows/dev-package-test.yml b/.github/workflows/dev-package-test.yml
index 7a14eeef9..47c9f4bab 100644
--- a/.github/workflows/dev-package-test.yml
+++ b/.github/workflows/dev-package-test.yml
@@ -41,7 +41,7 @@ jobs:
         run: yarn install --frozen-lockfile
 
       - name: Install Client Package
-        if: matrix.NPM_CLIENT == 'pnpm'
+        if: ${{ matrix.NPM_CLIENT == 'pnpm' }}
         run: npm install --global pnpm@5
 
       - name: Run Tests
diff --git a/.github/workflows/dev-test.yml b/.github/workflows/dev-test.yml
index 765cf4998..89bc090cd 100644
--- a/.github/workflows/dev-test.yml
+++ b/.github/workflows/dev-test.yml
@@ -55,16 +55,16 @@ jobs:
         run: yarn install --frozen-lockfile
 
       - name: Run Tests (macOS)
-        if: matrix.os == 'macos-latest'
+        if: ${{ matrix.os == 'macos-latest' }}
         run: yarn test --maxWorkers=4
 
       - name: Run Tests (Linux and Windows)
-        if: matrix.os != 'macos-latest'
+        if: ${{ matrix.os != 'macos-latest' }}
         run: yarn test --maxWorkers=2
 
       - name: Upload Coverage
         uses: codecov/codecov-action@v1.5.2
-        if: matrix.ENABLE_CODE_COVERAGE
+        if: ${{ matrix.ENABLE_CODE_COVERAGE }}
         with:
           fail_ci_if_error: true
 
@@ -76,6 +76,6 @@ jobs:
 
       - name: Upload Coverage (PRETTIER_FALLBACK_RESOLVE)
         uses: codecov/codecov-action@v1.5.2
-        if: matrix.ENABLE_CODE_COVERAGE
+        if: ${{ matrix.ENABLE_CODE_COVERAGE }}
         with:
           fail_ci_if_error: true
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 589139377..8e27907d9 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -39,5 +39,11 @@ jobs:
       - name: Lint Changelog
         run: yarn lint:changelog
 
+      - name: Lint workflow files
+        run: |
+          bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
+          ./actionlint -color
+        shell: bash
+
       - name: Check Lock File Changes
         run: yarn && echo "Listing changed files:" && git diff --name-only --exit-code && echo "No files changed during lint."
diff --git a/.github/workflows/prod-test.yml b/.github/workflows/prod-test.yml
index 2c4a8266c..7f989fea6 100644
--- a/.github/workflows/prod-test.yml
+++ b/.github/workflows/prod-test.yml
@@ -45,7 +45,7 @@ jobs:
       # It should be the last step
       # The cache step might saving the result of main branch, need investigate
       - name: Check Sizes
-        if: github.event_name == 'pull_request' && startsWith(github.head_ref, 'dependabot/npm_and_yarn/')
+        if: ${{ github.event_name == 'pull_request' && startsWith(github.head_ref, 'dependabot/npm_and_yarn/') }}
         uses: preactjs/compressed-size-action@2.3.0
         with:
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
@@ -116,7 +116,7 @@ jobs:
           node-version: ${{ matrix.node }}
 
       - name: Config `ignore-engines=true` (Node.js 10)
-        if: matrix.node == '10'
+        if: ${{ matrix.node == '10' }}
         run: yarn config set ignore-engines true
 
       - name: Install Dependencies
@@ -129,19 +129,19 @@ jobs:
           path: dist
 
       - name: Run Tests (macOS)
-        if: matrix.os == 'macos-latest'
+        if: ${{ matrix.os == 'macos-latest' }}
         run: yarn test:dist --maxWorkers=4
 
       - name: Run Tests (Linux and Windows)
-        if: matrix.os != 'macos-latest'
+        if: ${{ matrix.os != 'macos-latest' }}
         run: yarn test:dist --maxWorkers=2
 
       - name: Run Tests (standalone) (macOS)
-        if: matrix.os == 'macos-latest'
+        if: ${{ matrix.os == 'macos-latest' }}
         run: yarn test:dist-standalone --maxWorkers=4
 
       - name: Run Tests (standalone) (Linux and Windows)
-        if: matrix.os != 'macos-latest'
+        if: ${{ matrix.os != 'macos-latest' }}
         run: yarn test:dist-standalone --maxWorkers=2
 
       # #8073 test
diff --git a/cspell.json b/cspell.json
index 5daec9eba..ed873cec4 100644
--- a/cspell.json
+++ b/cspell.json
@@ -1,6 +1,7 @@
 {
     "version": "0.1",
     "words": [
+        "actionlint",
         "ACMR",
         "Alexa",
         "algolia",