diff --git a/.github/workflows/CD.yml b/.github/workflows/CD.yml
index 3d4ffed..8ddad3d 100644
--- a/.github/workflows/CD.yml
+++ b/.github/workflows/CD.yml
@@ -11,10 +11,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v2.3.3
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@v1.4.0
+      uses: actions/setup-dotnet@v1.7.2
       with:
         dotnet-version: 3.1.100
 
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7e7d3a0..d92e8aa 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -12,10 +12,10 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v2.3.3
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@v1.4.0
+      uses: actions/setup-dotnet@v1.7.2
       with:
         dotnet-version: 3.1.100