diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4d0d1fd0..1103e96c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -127,7 +127,7 @@ jobs:
         path: artifact-zip
 
   Linux-Build:
-    runs-on: ubuntu-18.04 # build against an older glibc for compatibility
+    runs-on: ubuntu-20.04
     needs: Lint
     strategy:
       matrix: