diff --git a/beakerx_widgets/beakerx/__init__.py b/beakerx_widgets/beakerx/__init__.py
index bb047f7..7d88b55 100644
--- a/beakerx_widgets/beakerx/__init__.py
+++ b/beakerx_widgets/beakerx/__init__.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from ._version import version_info, __version__
-# from .commands import parse_widgets
+from .commands import parse_widgets
 from .forms import *
 from .jupyter_server_handlers import setup_jupyter_server_handlers
 from .magics import *
diff --git a/beakerx_widgets/beakerx/commands.py b/beakerx_widgets/beakerx/commands.py
index a8bbf47..f14cb28 100644
--- a/beakerx_widgets/beakerx/commands.py
+++ b/beakerx_widgets/beakerx/commands.py
@@ -15,7 +15,6 @@
 import sys
 
 import beakerx
-from notebook import notebookapp as app
 
 from .bkr2ipynb import main
 from .install import install, uninstall
@@ -63,14 +62,9 @@ def bkr2ipynb_subparser(subparser):
 #     Py4JServer(args.port, args.pyport, args.kernel, args.context)
 
 
-def run_jupyter(jupyter_commands):
-    app.launch_new_instance(jupyter_commands)
-
-
 def init_parser():
     parser = argparse.ArgumentParser()
     parser.add_argument('--version', action='version', version=beakerx.__version__)
-    parser.set_defaults(func=run_jupyter)
 
     subparsers = parser.add_subparsers()
     install_subparser(subparsers)
@@ -83,9 +77,7 @@ def init_parser():
 def parse_widgets():
     parser = init_parser()
     args, jupyter_commands = parser.parse_known_args()
-    if args.func == run_jupyter:
-        args.func(jupyter_commands)
-    elif not jupyter_commands:
+    if not jupyter_commands:
         args.func(args)
     else:
         parser.parse_args(jupyter_commands)
diff --git a/beakerx_widgets/beakerx/install.py b/beakerx_widgets/beakerx/install.py
index 9aaed1f..efebec3 100644
--- a/beakerx_widgets/beakerx/install.py
+++ b/beakerx_widgets/beakerx/install.py
@@ -123,12 +123,8 @@ def make_parser():
 
 
 def install(args):
-    if sys.platform == 'win32':
-        subprocess.check_call(["jupyter", "nbextension", "install", "beakerx", "--py", "--sys-prefix"])
-        
-    subprocess.check_call(["jupyter", "nbextension", "enable", "beakerx", "--py", "--sys-prefix"])
     subprocess.check_call(["jupyter", "serverextension", "enable", "beakerx", "--py", "--sys-prefix"])
-    if LAB_VERSION is not None and LAB_VERSION != 3:
+    if LAB_VERSION is not None and LAB_VERSION < 3:
         subprocess.call(["jupyter", "labextension", "install", "@jupyter-widgets/jupyterlab-manager", "--no-build"],
                         stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
         if LAB_VERSION == 1:
@@ -142,7 +138,6 @@ def install(args):
 
 
 def uninstall(args):
-    subprocess.check_call(["jupyter", "nbextension", "disable", "beakerx", "--py", "--sys-prefix"])
     subprocess.check_call(["jupyter", "nbextension", "uninstall", "beakerx", "--py", "--sys-prefix"])
     subprocess.check_call(["jupyter", "serverextension", "disable", "beakerx", "--py", "--sys-prefix"])
     if LAB_VERSION is not None:
diff --git a/beakerx_widgets/pyproject.toml b/beakerx_widgets/pyproject.toml
index 68605bf..8b9a4b6 100644
--- a/beakerx_widgets/pyproject.toml
+++ b/beakerx_widgets/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["jupyter_packaging~=0.10,<2", "jupyterlab~=3.1"]
+requires = ["jupyter_packaging~=0.10,<2", "jupyterlab>4,<5"]
 build-backend = "jupyter_packaging.build_api"
 
 [tool.jupyter-packaging.options]
diff --git a/configuration.yml b/configuration.yml
index 4d4108e..41f9941 100644
--- a/configuration.yml
+++ b/configuration.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
 dependencies:
   - bottle
-  - ipywidgets>=7.5.1,<8
+  - ipywidgets>=7.5.1,<9
   - pandas
   - py4j
   - pyspark