diff --git a/.github/workflows/build-and-run.yaml b/.github/workflows/build-and-run.yaml
index 3ad2613..a10f2f9 100644
--- a/.github/workflows/build-and-run.yaml
+++ b/.github/workflows/build-and-run.yaml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
 
     steps:
     - uses: actions/checkout@v2