diff --git a/tools/gulp-tasks/format.js b/tools/gulp-tasks/format.js
index 11f5393934..90db154597 100644
--- a/tools/gulp-tasks/format.js
+++ b/tools/gulp-tasks/format.js
@@ -10,6 +10,7 @@ const {I18N_FOLDER, I18N_DATA_FOLDER} = require('./cldr/extract');
 
 // clang-format entry points
 const srcsToFmt = [
+  'dev-infra/**/*.{js,ts}',
   'packages/**/*.{js,ts}',
   '!packages/zone.js',  // Ignore the `zone.js/` directory itself. (The contents are still matched.)
   `!${I18N_DATA_FOLDER}/**/*.{js,ts}`,