diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1ab3e45..656cf27 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -162,7 +162,7 @@ jobs:
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
       - name: Install extension dependencies and build the extension
-        run: ./scripts/dev-install.sh
+        run: ./scripts/dev_install.sh
 
       - name: Run mypy
         run: |
diff --git a/.licenserc.yaml b/.licenserc.yaml
index a4b17ba..0808480 100644
--- a/.licenserc.yaml
+++ b/.licenserc.yaml
@@ -8,6 +8,7 @@ header:
       Distributed under the terms of the Modified BSD License.
 
   paths-ignore:
+    - '**/*.typed'
     - '**/*.ipynb'
     - '**/*.json'
     - '**/*.md'
diff --git a/python/jupyterlab-chat/jupyterlab_chat/__init__.py b/python/jupyterlab-chat/jupyterlab_chat/__init__.py
index 08daf35..e4855ea 100644
--- a/python/jupyterlab-chat/jupyterlab_chat/__init__.py
+++ b/python/jupyterlab-chat/jupyterlab_chat/__init__.py
@@ -11,8 +11,6 @@
     warnings.warn("Importing 'jupyterlab_chat' outside a proper installation.")
     __version__ = "dev"
 
-from .ychat import YChat
-
 
 def _jupyter_labextension_paths():
     return [{