diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index 082aec0e..d008da4f 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -26,7 +26,7 @@ jobs:
       fail-fast: false
       matrix:
         ghc: ["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]
         cabal: ["3.10.3.0"]
 
     steps:
@@ -223,7 +223,7 @@ jobs:
       fail-fast: false
       matrix:
         ghc: ["8.10.4"]
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-13]
 
     steps:
       - uses: actions/download-artifact@v4