diff --git a/.github/workflows/build_ubuntu.yml b/.github/workflows/build_ubuntu.yml
index fa6dff8e..fe9f28f3 100644
--- a/.github/workflows/build_ubuntu.yml
+++ b/.github/workflows/build_ubuntu.yml
@@ -4,7 +4,7 @@ on: [push]
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
         with: