diff --git a/.github/workflows/publish-docs.yaml b/.github/workflows/publish-docs.yaml
index c0c7934c..b74dfc50 100644
--- a/.github/workflows/publish-docs.yaml
+++ b/.github/workflows/publish-docs.yaml
@@ -12,7 +12,7 @@ jobs:
       pages: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
           persist-credentials: false
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 548797ff..ebe2c6a3 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -13,7 +13,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           persist-credentials: false