diff --git a/frontend_server_client/pubspec.yaml b/frontend_server_client/pubspec.yaml
index 1604899..95ad25f 100644
--- a/frontend_server_client/pubspec.yaml
+++ b/frontend_server_client/pubspec.yaml
@@ -1,5 +1,5 @@
 name: frontend_server_client
-version: 4.0.0
+version: 4.0.1-wip
 description: >-
   Client code to start and interact with the frontend_server compiler from the
   Dart SDK.