diff --git a/labextension/package.json b/labextension/package.json
index 699cb3cf..320a8ce5 100644
--- a/labextension/package.json
+++ b/labextension/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jupyterhub/jupyter-server-proxy",
-  "version": "4.1.0",
+  "version": "4.1.1-0.dev",
   "description": "A JupyterLab extension accompanying the PyPI package jupyter-server-proxy adding launcher items for configured server processes.",
   "keywords": [
     "jupyter",
diff --git a/pyproject.toml b/pyproject.toml
index 28f9591d..4a4d35ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -171,7 +171,7 @@ profile = "black"
 github_url = "https://github.com/jupyterhub/jupyter-server-proxy"
 
 [tool.tbump.version]
-current = "4.1.0"
+current = "4.1.1-0.dev"
 regex = '''
     (?P<major>\d+)
     \.