diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d8abd2893..a31961853 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,8 +36,8 @@ jobs:
     strategy:
       matrix:
         os:
-          - macos-12
-          - macos-11
+          - macos-15
+          - macos-14
 
     steps:
       - name: Check out the codebase.
diff --git a/tests/uninstall-homebrew.sh b/tests/uninstall-homebrew.sh
index d6d4c966c..40e1bf183 100755
--- a/tests/uninstall-homebrew.sh
+++ b/tests/uninstall-homebrew.sh
@@ -11,3 +11,4 @@ sudo ./uninstall.sh --force
 sudo rm -rf /usr/local/Homebrew
 sudo rm -rf /usr/local/Caskroom
 sudo rm -rf /usr/local/bin/brew
+sudo rm -rf /opt/homebrew