diff --git a/Library/Homebrew/dev-cmd/tap-new.rb b/Library/Homebrew/dev-cmd/tap-new.rb
index db5e742c15..317794aa24 100644
--- a/Library/Homebrew/dev-cmd/tap-new.rb
+++ b/Library/Homebrew/dev-cmd/tap-new.rb
@@ -54,7 +54,7 @@ module Homebrew
       jobs:
       - job: macOS
         pool:
-          vmImage: macOS-10.13
+          vmImage: macOS-10.14
         steps:
           - bash: |
               set -e