diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ea3e3a4..f9dc13c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -5,7 +5,7 @@ on:
       - 'v*'
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - uses: actions/create-release@v1