diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39174af..386918a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,7 @@ jobs:
         make
 
   macos: 
-    runs-on: macos-12
+    runs-on: macos-13
     steps:
     - name: Gfortran
       run: |