diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 97ef9be2041..f92649fc9fb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,7 +3,7 @@ name: Build
 on: [push]
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-java@v1