diff --git a/package.json b/package.json
index 25f55170..b8288818 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jupyter-vega",
-  "version": "4.0.0",
+  "version": "4.1.0",
   "description": "IPython/Jupyter notebook module for [Vega](https://vega.github.io/vega), and [Vega-Lite](https://vega.github.io/vega-lite).",
   "repository": {
     "type": "git",
diff --git a/pyproject.toml b/pyproject.toml
index f8c46058..a01b41ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "vega"
-version = "4.0.0"
+version = "4.1.0"
 license = "BSD 3-clause"
 description = "A Jupyter widget for Vega 5 and Vega-Lite 4"
 authors = ["Dominik Moritz <domoritz@gmail.com>"]
diff --git a/vega/__init__.py b/vega/__init__.py
index aee97018..60e8f044 100644
--- a/vega/__init__.py
+++ b/vega/__init__.py
@@ -8,7 +8,7 @@
 
 __all__ = ['Vega', 'VegaLite']
 
-__version__ = '4.0.0'
+__version__ = '4.1.0'
 
 
 def _jupyter_nbextension_paths():
diff --git a/vega/_frontend.py b/vega/_frontend.py
index d6032a5d..8007f6ac 100644
--- a/vega/_frontend.py
+++ b/vega/_frontend.py
@@ -1,2 +1,2 @@
 module_name = "jupyter-vega"
-EXTENSION_SPEC_VERSION = "^4.0.0"
+EXTENSION_SPEC_VERSION = "^4.1.0"