diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index c4d5e49ce..58a98563e 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   build:
 
-    runs-on: [ ubuntu-latest, windows-latest, macOS-latest ]
+    runs-on: [ ubuntu-latest, windows-latest, macos-latest ]
 
     steps:
     - uses: actions/checkout@v2