diff --git a/packages/codemirror-extension/package.json b/packages/codemirror-extension/package.json
index 9166ca89abda..6c4a13b52780 100644
--- a/packages/codemirror-extension/package.json
+++ b/packages/codemirror-extension/package.json
@@ -32,7 +32,6 @@
   },
   "dependencies": {
     "@jupyterlab/application": "^0.19.1",
-    "@jupyterlab/apputils": "^0.19.1",
     "@jupyterlab/codeeditor": "^0.19.1",
     "@jupyterlab/codemirror": "^0.19.1",
     "@jupyterlab/coreutils": "^2.2.1",
@@ -40,11 +39,8 @@
     "@jupyterlab/fileeditor": "^0.19.1",
     "@jupyterlab/mainmenu": "^0.8.1",
     "@jupyterlab/statusbar": "^0.7.1",
-    "@phosphor/commands": "^1.6.1",
-    "@phosphor/coreutils": "^1.3.0",
     "@phosphor/widgets": "^1.6.0",
-    "codemirror": "~5.39.0",
-    "react": "~16.4.2"
+    "codemirror": "~5.39.0"
   },
   "devDependencies": {
     "rimraf": "~2.6.2",
diff --git a/packages/codemirror-extension/tsconfig.json b/packages/codemirror-extension/tsconfig.json
index 7466ffa8cc04..d6f1fff4d420 100644
--- a/packages/codemirror-extension/tsconfig.json
+++ b/packages/codemirror-extension/tsconfig.json
@@ -9,9 +9,6 @@
     {
       "path": "../application"
     },
-    {
-      "path": "../apputils"
-    },
     {
       "path": "../codeeditor"
     },
diff --git a/packages/notebook-extension/package.json b/packages/notebook-extension/package.json
index bb04975462f3..a6e339d0fe52 100644
--- a/packages/notebook-extension/package.json
+++ b/packages/notebook-extension/package.json
@@ -43,11 +43,9 @@
     "@jupyterlab/rendermime": "^0.19.1",
     "@jupyterlab/services": "^3.2.1",
     "@jupyterlab/statusbar": "^0.7.1",
-    "@phosphor/algorithm": "^1.1.2",
     "@phosphor/coreutils": "^1.3.0",
     "@phosphor/messaging": "^1.2.2",
-    "@phosphor/widgets": "^1.6.0",
-    "react": "~16.4.2"
+    "@phosphor/widgets": "^1.6.0"
   },
   "devDependencies": {
     "rimraf": "~2.6.2",
diff --git a/packages/statusbar-extension/package.json b/packages/statusbar-extension/package.json
index 5b3ef870b74f..72e49e908e7f 100644
--- a/packages/statusbar-extension/package.json
+++ b/packages/statusbar-extension/package.json
@@ -36,23 +36,12 @@
     "@jupyterlab/application": "^0.19.1",
     "@jupyterlab/apputils": "^0.19.1",
     "@jupyterlab/cells": "^0.19.1",
-    "@jupyterlab/codeeditor": "^0.19.1",
     "@jupyterlab/console": "^0.19.1",
-    "@jupyterlab/coreutils": "^2.2.1",
-    "@jupyterlab/docmanager": "^0.19.1",
     "@jupyterlab/docregistry": "^0.19.1",
     "@jupyterlab/fileeditor": "^0.19.1",
     "@jupyterlab/notebook": "^0.19.2",
-    "@jupyterlab/services": "^3.2.1",
     "@jupyterlab/statusbar": "^0.7.1",
-    "@phosphor/commands": "^1.6.1",
-    "@phosphor/coreutils": "^1.3.0",
-    "@phosphor/disposable": "^1.1.2",
-    "@phosphor/messaging": "^1.2.2",
-    "@phosphor/signaling": "^1.2.2",
-    "@phosphor/widgets": "^1.6.0",
-    "react": "~16.4.2",
-    "typestyle": "^2.0.1"
+    "@phosphor/widgets": "^1.6.0"
   },
   "devDependencies": {
     "@types/react": "~16.4.13",
diff --git a/packages/statusbar-extension/tsconfig.json b/packages/statusbar-extension/tsconfig.json
index 6e056619af2e..d0d6245041c1 100644
--- a/packages/statusbar-extension/tsconfig.json
+++ b/packages/statusbar-extension/tsconfig.json
@@ -15,18 +15,9 @@
     {
       "path": "../cells"
     },
-    {
-      "path": "../codeeditor"
-    },
     {
       "path": "../console"
     },
-    {
-      "path": "../coreutils"
-    },
-    {
-      "path": "../docmanager"
-    },
     {
       "path": "../docregistry"
     },
@@ -36,9 +27,6 @@
     {
       "path": "../notebook"
     },
-    {
-      "path": "../services"
-    },
     {
       "path": "../statusbar"
     }