diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 136dda1..42f1364 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,7 +13,7 @@ jobs:
     
     steps:
     - name: Checkout
-      uses: actions/checkout@master
+      uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 0
 
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 96b35cf..4159bb6 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -9,7 +9,7 @@ jobs:
     
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.1.0
       with:
         fetch-depth: 2