diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1788e0f..01ab45a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: "opensafely-core/setup-action@v1"
         with:
           python-version: "3.10"
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: "opensafely-core/setup-action@v1"
         with:
           python-version: "3.10"