diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 52c5239d2..a83ccbed2 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -141,7 +141,7 @@ jobs:
 
   build:
     name: Build code-server
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     timeout-minutes: 30
     env:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}