diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9d22ef9..0dc36f8 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -6,7 +6,7 @@ on:
       - main
 jobs:
   publish:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - uses: NuGet/setup-nuget@v1