diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 77f1275..5ae1b70 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,4 +21,4 @@ jobs:
 
     steps:
       - name: Check out the codebase.
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4