diff --git a/pyproject.toml b/pyproject.toml
index 35a7a0eddc..e8681c4610 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ src = "ipywidgets/_version.py"
 skip = ["check-links", "check-manifest"]
 
 [tool.jupyter-releaser.hooks]
-before-bump-version = ["python -m pip install bump2version jupyterlab~=3.0"]
+before-bump-version = ["python -m pip install bump2version jupyterlab~=3.0", "./dev-install.sh"]
 before-build-npm = ["python -m pip install jupyterlab~=3.0", "jlpm clean", "jlpm build:prod"]
 before-build-python = ["jlpm clean"]
 
diff --git a/widgetsnbextension/package.json b/widgetsnbextension/package.json
index e3bec9ff79..609d0e3eb8 100644
--- a/widgetsnbextension/package.json
+++ b/widgetsnbextension/package.json
@@ -32,7 +32,6 @@
     "backbone": "1.4.0"
   },
   "devDependencies": {
-    "lerna": "^4.0.0",
     "css-loader": "^5.2.6",
     "rimraf": "^3.0.2",
     "style-loader": "^2.0.0",