diff --git a/.github/workflows/deploy-doc.yml b/.github/workflows/deploy-doc.yml
index 2206210..1a035ca 100644
--- a/.github/workflows/deploy-doc.yml
+++ b/.github/workflows/deploy-doc.yml
@@ -13,7 +13,7 @@ jobs:
         run: sudo apt-get install -y libgdbm-compat-dev
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Use OCaml 4.12.x
         uses: ocaml/setup-ocaml@v2