diff --git a/.github/workflows/ada.yml b/.github/workflows/ada.yml
index 23cd615..a359c34 100644
--- a/.github/workflows/ada.yml
+++ b/.github/workflows/ada.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set up GNAT toolchain
       run: >