diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 8200003..a04c6f6 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         ghc: ["8.10.7", "9.2.8", "9.6.5", "9.8.2", "9.10.1"]
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest, macos-13, windows-latest]
 
     steps:
     - uses: actions/checkout@v1