diff --git a/.ci/install.yml b/.ci/install.yml
index c97ea587..680851aa 100644
--- a/.ci/install.yml
+++ b/.ci/install.yml
@@ -3,3 +3,7 @@ steps:
       choco install -y llvm
     displayName: Windows Install LLVM
     condition: eq( variables['Agent.OS'], 'Windows_NT' )
+  - script: |
+      brew uninstall llvm
+    displayName: macOS Uninstall LLVM
+    condition: eq( variables['Agent.OS'], 'Darwin' )