diff --git a/.github/workflows/build_package.yml b/.github/workflows/build_package.yml
index a5d961c..00e9570 100644
--- a/.github/workflows/build_package.yml
+++ b/.github/workflows/build_package.yml
@@ -12,7 +12,7 @@ jobs:
                 python: [3.8, 3.9]
 
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
index 7d88601..0eeaba4 100644
--- a/.github/workflows/labeler.yml
+++ b/.github/workflows/labeler.yml
@@ -11,7 +11,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.3
+              uses: actions/checkout@v4
 
             - name: Run Labeler
               uses: crazy-max/ghaction-github-labeler@v4.1.0
diff --git a/.github/workflows/publish_docs.yml b/.github/workflows/publish_docs.yml
index ca2d9cb..025589b 100644
--- a/.github/workflows/publish_docs.yml
+++ b/.github/workflows/publish_docs.yml
@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python
diff --git a/.github/workflows/publish_package.yml b/.github/workflows/publish_package.yml
index 75b04c3..d96ec7b 100644
--- a/.github/workflows/publish_package.yml
+++ b/.github/workflows/publish_package.yml
@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.4
+              uses: actions/checkout@v4
               with:
                   fetch-depth: 2
 
diff --git a/.github/workflows/run_cookietemple_lint.yml b/.github/workflows/run_cookietemple_lint.yml
index 0bd493a..d519f57 100644
--- a/.github/workflows/run_cookietemple_lint.yml
+++ b/.github/workflows/run_cookietemple_lint.yml
@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               name: Check out source-code repository
 
             - name: Setup Python
diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 28cbaa7..c019091 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -69,7 +69,7 @@ jobs:
 
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v2.3.4
+              uses: actions/checkout@v4
 
             - name: Set up Python ${{ matrix.python-version }}
               uses: actions/setup-python@v4
@@ -134,7 +134,7 @@ jobs:
         needs: tests
         steps:
             - name: Check out the repository
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: Set up Python 3.8
               uses: actions/setup-python@v4
diff --git a/.github/workflows/sync_project.yml b/.github/workflows/sync_project.yml
index 507254a..6c7088d 100644
--- a/.github/workflows/sync_project.yml
+++ b/.github/workflows/sync_project.yml
@@ -17,7 +17,7 @@ jobs:
             - name: Install cookietemple
               run: pip install cookietemple
 
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v4
               with:
                   fetch-depth: 0
                   token: "${{ secrets.CT_SYNC_TOKEN }}"