diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9bc1cae..aa7e543 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
         # Bookend python versions
         python-version: ["3.8", "3.9", "3.10"]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
       - name: Set environment variables