diff --git a/.github/workflows/create_zip.yaml b/.github/workflows/create_zip.yaml
index de0284d..d21f568 100644
--- a/.github/workflows/create_zip.yaml
+++ b/.github/workflows/create_zip.yaml
@@ -5,6 +5,7 @@ on:
       - master
     paths:
       - "doc/**"
+      - ".github/workflows/create_zip.yaml"
 
 defaults:
   run:
diff --git a/.github/workflows/react-jest.yaml b/.github/workflows/react-jest.yaml
index 70fbc55..5ac81a5 100644
--- a/.github/workflows/react-jest.yaml
+++ b/.github/workflows/react-jest.yaml
@@ -15,20 +15,22 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: read
+    # デフォルトのワーキングディレクトリのため設定不要だが，明示的に指定。
     defaults:
-      # デフォルトのワーキングディレクトリのため設定不要だが，明示的に指定。
       run:
         working-directory: /home/runner/work/devsecops-demo-aws-ecs/devsecops-demo-aws-ecs
-
+    strategy:
+      matrix:
+        node_version: [20, 22]
 
     steps:
       # checkout repository to runner
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
-      - name: set up node20
-        uses: actions/setup-node@1a4442cacd436585916779262731d5b162bc6ec7 # v3.8.2
+      - name: set up node
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
         with:
-          node-version: '20'
+          node-version: ${{ matrix.node_version }}
 
       - name: install package using aqua
         uses: aquaproj/aqua-installer@6ce1f8848ec8e61f14d57bd5d7597057a6dd187c # v3.0.1
diff --git a/doc/fig/matrix_test.png b/doc/fig/matrix_test.png
new file mode 100644
index 0000000..93165ca
Binary files /dev/null and b/doc/fig/matrix_test.png differ
diff --git a/doc/github-actions.md b/doc/github-actions.md
index e7de5f6..d4ba638 100644
--- a/doc/github-actions.md
+++ b/doc/github-actions.md
@@ -128,3 +128,37 @@ jobs:
             sarif_file: report.sarif
             category: semgrep
 ```
+
+---
+
+## matrixを使ってジョブを複数実行する
+
+> [jobにmatrixを使用する](https://docs.github.com/ja/actions/using-jobs/using-a-matrix-for-your-jobs)
+
+```yaml
+jobs:
+  frontend-jest: # job id(typed by user)
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    # デフォルトのワーキングディレクトリのため設定不要だが，明示的に指定。
+    defaults:
+      run:
+        working-directory: /home/runner/work/devsecops-demo-aws-ecs/devsecops-demo-aws-ecs
+    strategy:
+      matrix:
+        node_version: [20, 22]
+
+    steps:
+      # checkout repository to runner
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+      - name: set up node
+        uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
+        with:
+          node-version: ${{ matrix.node_version }}
+```
+
+成功すると以下のような感じになる。
+
+![matrix image](./fig/matrix_test.png)