diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index bdb4d37..ea52d71 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -31,7 +31,7 @@ jobs:
           - python-version: 3.12
             environment-file: ci/environment.yaml
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.