diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 8c5380e65e..bcd0082c6f 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -51,7 +51,9 @@ jobs:
   - task: CmdLine@2
     displayName: 'Install CastXML'
     inputs:
-      script: brew install castxml
+      script: |
+        brew update
+        brew install castxml
 
   - task: CmdLine@2
     displayName: 'Install Nuke'