diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c0657fd9..14474980 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,7 +8,7 @@ on:
 jobs:
   build-linux:
     name: build-linux
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
 
     steps:
       - uses: actions/checkout@v2.3.4