diff --git a/.github/workflows/Specs.yml b/.github/workflows/Specs.yml
index d4dbb89..e3e7862 100644
--- a/.github/workflows/Specs.yml
+++ b/.github/workflows/Specs.yml
@@ -5,7 +5,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-10.15]
+        os: [macos-12]
         ruby: [2.7, 3.0.0]
 
     name: ${{ matrix.os }} / Ruby ${{ matrix.ruby }}