diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b419706c..4c97c33e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install OCaml compiler
         uses: ocaml/setup-ocaml@v2