diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 3836029..f91dc8f 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2ebca25..9c70616 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,7 +27,7 @@ jobs:
         echo "Reason for triggering: ${{ github.event.inputs.reason }}"
 
     - name: Check out
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0  # unshallow fetch for setuptools-scm
 
diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index aa32b00..303a2a1 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Log reason (manual run only)
       if: github.event_name == 'workflow_dispatch'