diff --git a/.github/workflows/reboundx.yml b/.github/workflows/reboundx.yml
index af1a60b68..6e7fa5e45 100644
--- a/.github/workflows/reboundx.yml
+++ b/.github/workflows/reboundx.yml
@@ -14,7 +14,7 @@ jobs:
         os: [ubuntu-latest, macos-11]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         path: ./rebound
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4