diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index e3c4d60..4f46e5f 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -4,7 +4,7 @@ on:
   push:
 jobs:
   tests:
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
     - uses: actions/checkout@v2.4.0
     - uses: cachix/install-nix-action@v15