diff --git a/.github/workflows/bootstrap.yaml b/.github/workflows/bootstrap.yaml
index 61f423e..f4e1274 100644
--- a/.github/workflows/bootstrap.yaml
+++ b/.github/workflows/bootstrap.yaml
@@ -31,7 +31,7 @@ jobs:
         run:
           echo "AWS_REGION=${{ github.event.inputs.aws_region }}" >> $GITHUB_ENV
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: "22.x"
           cache: "npm"
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 71c5944..23e9c03 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -24,7 +24,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: "22.x"
           cache: "npm"
diff --git a/.github/workflows/test-and-release.yaml b/.github/workflows/test-and-release.yaml
index 28b96cf..85fe139 100644
--- a/.github/workflows/test-and-release.yaml
+++ b/.github/workflows/test-and-release.yaml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: "22.x"
           cache: "npm"