diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5f7fdc7e..e714494d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     - name: Install .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 3.0.100
+        dotnet-version: '3.1.x'
 
     - name: Build & test (Release)
       run: dotnet test src -c Release