diff --git a/.github/workflows/ci_integration.yml b/.github/workflows/ci_integration.yml
index 38cab2b6..5f7f5521 100644
--- a/.github/workflows/ci_integration.yml
+++ b/.github/workflows/ci_integration.yml
@@ -30,7 +30,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v5
@@ -67,7 +67,7 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/ci_static-analysis.yaml b/.github/workflows/ci_static-analysis.yaml
index 1dd67a65..48025ee4 100644
--- a/.github/workflows/ci_static-analysis.yaml
+++ b/.github/workflows/ci_static-analysis.yaml
@@ -32,7 +32,7 @@ jobs:
           - pylint-examples
           - black-check
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: 3.8
diff --git a/.github/workflows/ci_tests.yaml b/.github/workflows/ci_tests.yaml
index 06e8ce5e..57be86a0 100644
--- a/.github/workflows/ci_tests.yaml
+++ b/.github/workflows/ci_tests.yaml
@@ -52,7 +52,7 @@ jobs:
 #          - integ-slow
 #          - examples
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
@@ -75,7 +75,7 @@ jobs:
           - sourcebuildcheck
           - test-upstream-requirements-py311
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
diff --git a/.github/workflows/repo-sync.yml b/.github/workflows/repo-sync.yml
index cf250b94..5121a78c 100644
--- a/.github/workflows/repo-sync.yml
+++ b/.github/workflows/repo-sync.yml
@@ -13,7 +13,7 @@ jobs:
     environment: repo-sync
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: repo-sync/github-sync@v2
       name: Sync repo to branch
       with: