diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b5aeb0ad..ec27e2a7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
         mpisize: [1, 4, 16]
         ompsize: [1, 3]
         include:
-          - os: macos-10.15
+          - os: macos-11
             mpisize: 1
             ompsize: 1
           - os: ubuntu-20.04