diff --git a/.github/workflows/dotnetcore.yml b/.github/workflows/dotnetcore.yml
index c4a352c..a1dcfd3 100644
--- a/.github/workflows/dotnetcore.yml
+++ b/.github/workflows/dotnetcore.yml
@@ -12,6 +12,6 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 3.1
+          dotnet-version: 3.1.100
       - name: Build with dotnet
         run: dotnet build --configuration Release