diff --git a/webpack.config.js b/webpack.config.js
index ddfaf52e..4d8f7619 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -18,6 +18,11 @@ module.exports = {
     publicPath: "https://unpkg.com/thebelab@" + pkg.version + "/lib/",
   },
   plugins: [
+    // get slim jQuery
+    new webpack.NormalModuleReplacementPlugin(
+      /jquery$/,
+      "jquery/dist/jquery.slim.js"
+    ),
     // Not using moment
     shim(/moment/),
     // Don't need vim keymap
@@ -27,24 +32,39 @@ module.exports = {
     shim(/elliptic/),
     shim(/bn\.js/),
     shim(/readable\-stream/),
+    // can we get away without react-dom?
+    shim(/react\-dom/),
+    // skip postcss
+    shim(/postcss/),
+    shim(/font\-awesome/),
+    // shim(/ajv/),
+    // shim(/lodash/),
     // shim(/@phosphor\/coreutils\/lib\/random/),
     // shim out some unused phosphor
     shim(
-      /@phosphor\/widgets\/lib\/(commandpalette|box|dock|grid|menu|scroll|split|stacked|tab).*/
+      /@phosphor\/widgets\/lib\/(box|commandpalette|contextmenu|dock|grid|menu|scroll|split|stacked|tab).*/
     ),
+    shim(/@phosphor\/collections\/lib\/(bplustree).*/),
     shim(/@phosphor\/(dragdrop|commands).*/),
 
     // unused @jupyterlab
-    shim(/@jupyterlab\/apputils/),
-    // shim(/@jupyterlab\/apputils\/lib\/(clientsession|dialog|mainmenu|instancetracker|sanitizer|toolbar)/),
+    // shim(/@jupyterlab\/apputils/),
+    shim(
+      /@jupyterlab\/apputils\/lib\/(clientsession|dialog|instancetracker|mainareawidget|mainmenu|thememanager|toolbar|widgettracker)/
+    ),
     // shim(/@jupyterlab\/apputils\/style\/.*/),
 
     // JupyterLab's codemirror package is also big,
     // but not so trival to shim
+    // we only need CodeMirrorEditor.defaultConfig to be defined, as far as I can tell
     // shim(/@jupyterlab\/codemirror\/lib\/editor/),
     shim(/@jupyterlab\/codeeditor\/lib\/jsoneditor/),
     shim(/@jupyterlab\/coreutils\/lib\/(time|settingregistry|.*menu.*)/),
     shim(/@jupyterlab\/services\/lib\/(contents|terminal)\/.*/),
+    shim(/@jupyterlab\/statusbar\/.*/),
+    shim(/@jupyterlab\/theme-light-extension\/style\/(icons|images)\/.*/),
+    shim(/@jupyterlab\/theme-light-extension\/style\/(urls).css/),
+
     new BundleAnalyzerPlugin({
       analyzerMode: "static",
       openAnalyzer: false,