diff --git a/doc/examples/cleanup.sh b/doc/examples/cleanup.sh
index 2d5ae6cff..4ed2dc25d 100755
--- a/doc/examples/cleanup.sh
+++ b/doc/examples/cleanup.sh
@@ -6,3 +6,4 @@ rm -rf */ios
 rm -rf */web
 rm -rf */macos
 rm -rf */test
+rm -rf */.dart_tool