diff --git a/.github/workflows/CI_build.yml b/.github/workflows/CI_build.yml
index 542bd8c..88183ae 100644
--- a/.github/workflows/CI_build.yml
+++ b/.github/workflows/CI_build.yml
@@ -14,7 +14,7 @@ jobs:
         
     steps:
     - name: Checkout repo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Add msbuild to PATH
       uses: microsoft/setup-msbuild@v1
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index d87681a..f79b20c 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.