diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index a639b1d..f064826 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -17,7 +17,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11"]
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.1
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 872eb98..c30374a 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -14,7 +14,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.1
 
     - name: Set up Python
       uses: actions/setup-python@v5
diff --git a/.github/workflows/release-tags.yml b/.github/workflows/release-tags.yml
index 9cb9c0c..908e76a 100644
--- a/.github/workflows/release-tags.yml
+++ b/.github/workflows/release-tags.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v6.0.1
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/tag.yaml b/.github/workflows/tag.yaml
index 1f204b0..5fa8116 100644
--- a/.github/workflows/tag.yaml
+++ b/.github/workflows/tag.yaml
@@ -13,7 +13,7 @@ jobs:
     permissions:
       contents: write
     steps:
-    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+    - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
       with:
         fetch-depth: '0'
     - name: Bump version and push tag