diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 91a52da..5013683 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
       matrix:
         include:
           - architecture: x64
-            ubuntu: focal
+            ubuntu: bionic
             build: true
           - architecture: x64
             ubuntu: jammy