diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 65912f4e..bb77a86a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-10.15]
+        os: [ubuntu-20.04, macos-11]
         compiler: [gcc, clang]
 
     steps: