diff --git a/.github/workflows/CI_build.yml b/.github/workflows/CI_build.yml
index 556843f..54480ad 100644
--- a/.github/workflows/CI_build.yml
+++ b/.github/workflows/CI_build.yml
@@ -15,7 +15,7 @@ jobs:
         
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Add msbuild to PATH
       uses: microsoft/setup-msbuild@v1