diff --git a/.github/workflows/ci_publish.yml b/.github/workflows/ci_publish.yml
index 510284af..e80599be 100644
--- a/.github/workflows/ci_publish.yml
+++ b/.github/workflows/ci_publish.yml
@@ -25,10 +25,10 @@ jobs:
     name: Publish HTML
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  #v6.0.0
 
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  #v6.1.0
         with:
           python-version: '3.12'
 
diff --git a/.github/workflows/ci_tests_run_notebooks.yml b/.github/workflows/ci_tests_run_notebooks.yml
index 5bd70740..57126397 100644
--- a/.github/workflows/ci_tests_run_notebooks.yml
+++ b/.github/workflows/ci_tests_run_notebooks.yml
@@ -46,9 +46,9 @@ jobs:
             os: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8  # v5.0.0
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3  # v6.0.0
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c  #v6.0.0
+      uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548  #v6.1.0
       with:
         python-version: ${{ matrix.python-version }}