diff --git a/.github/workflows/create-release.yml b/.github/workflows/create-release.yml
index 29f5962..001c61a 100644
--- a/.github/workflows/create-release.yml
+++ b/.github/workflows/create-release.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 8991648..8d9ba79 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -74,7 +74,7 @@ jobs:
          # '~' in SINGULARITY_CACHEDIR value (from say a env: section in this YAML) is not expanded by
          # singularity so that paths used are misleading/unclear
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: "Install Singularity"
       run: |