diff --git a/.github/workflows/certsummary-deploy.yaml b/.github/workflows/certsummary-deploy.yaml
index ed3e6d2..724fc66 100644
--- a/.github/workflows/certsummary-deploy.yaml
+++ b/.github/workflows/certsummary-deploy.yaml
@@ -21,7 +21,7 @@ jobs:
       WEBSITE: ${{ secrets.WEBSITE }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/codeql-javascript-typescript.yml b/.github/workflows/codeql-javascript-typescript.yml
index e8c3ba6..a27c4ba 100644
--- a/.github/workflows/codeql-javascript-typescript.yml
+++ b/.github/workflows/codeql-javascript-typescript.yml
@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       with:
         persist-credentials: false
         
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
index e922181..607c75e 100644
--- a/.github/workflows/zizmor.yml
+++ b/.github/workflows/zizmor.yml
@@ -23,7 +23,7 @@ jobs:
       actions: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false