diff --git a/test/dart/Makefile.am b/test/dart/Makefile.am
index 59b3b7d..6f97de9 100644
--- a/test/dart/Makefile.am
+++ b/test/dart/Makefile.am
@@ -36,6 +36,8 @@
 
 clean-local:
 	$(RM) -r gen-dart test_client/.pub
+	find . -type d -name "packages" | xargs $(RM) -r
+	find . -type f -name ".packages" | xargs $(RM)
 
 client: stubs
 	${DART} test_client/bin/main.dart