diff --git a/engine/src/flutter/lib/web_ui/dev/canvaskit_roller.dart b/engine/src/flutter/lib/web_ui/dev/canvaskit_roller.dart
index 3aa804d207c..c85b9021cc4 100644
--- a/engine/src/flutter/lib/web_ui/dev/canvaskit_roller.dart
+++ b/engine/src/flutter/lib/web_ui/dev/canvaskit_roller.dart
@@ -56,6 +56,7 @@ data:
     'create',
     '--tag=version:$canvaskitVersion',
     '--pkg-def=cipd.yaml',
+    '--preserve-writable',
     '--json-output=result.json',
   ], workingDirectory: canvaskitDirectory.path);