diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ae074da..a127b4a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -10,7 +10,7 @@ jobs:
   test-bot:
     strategy:
       matrix:
-        os: [macos-13, macos-14, macos-15, macos-26]
+        os: [macos-14, macos-15, macos-26]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Homebrew