diff --git a/.github/workflows/python-latest.yml b/.github/workflows/python-latest.yml
index bc28c66..066ddbd 100644
--- a/.github/workflows/python-latest.yml
+++ b/.github/workflows/python-latest.yml
@@ -16,7 +16,7 @@ jobs:
       matrix:
         python-version: ["3.11"]
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
diff --git a/.github/workflows/python-multiple-versions.yml b/.github/workflows/python-multiple-versions.yml
index 853c4f4..22382dc 100644
--- a/.github/workflows/python-multiple-versions.yml
+++ b/.github/workflows/python-multiple-versions.yml
@@ -18,7 +18,7 @@ jobs:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
         python-version: ["3.9", "3.10", "3.11"]
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 752c575..28a175c 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
     - name: Set up Python
       uses: actions/setup-python@v6
       with: