diff --git a/.github/workflows/continuous-build.yml b/.github/workflows/continuous-build.yml
index 072485e..788dc25 100644
--- a/.github/workflows/continuous-build.yml
+++ b/.github/workflows/continuous-build.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os:
-          - macos-latest
+          - macos-13
           - ubuntu-latest
         ruby:
           - 2.4