diff --git a/.gitignore b/.gitignore
index 4aac7d523..6c0fc12ec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,3 +29,4 @@ docs/source/examples
 
 .jupyter_releaser_checkout
 .eslintcache
+.yarn
\ No newline at end of file
diff --git a/examples/example-accordionpanel/package.json b/examples/example-accordionpanel/package.json
index 49502c6dd..b9b88afde 100644
--- a/examples/example-accordionpanel/package.json
+++ b/examples/example-accordionpanel/package.json
@@ -1,15 +1,15 @@
 {
   "name": "@lumino/example-accordionpanel",
-  "version": "0.8.8",
+  "version": "0.8.9",
   "private": true,
   "scripts": {
     "build": "tsc && webpack",
     "clean": "rimraf build"
   },
   "dependencies": {
-    "@lumino/default-theme": "^0.22.8",
+    "@lumino/default-theme": "^0.22.9",
     "@lumino/messaging": "^1.10.3",
-    "@lumino/widgets": "^1.37.1",
+    "@lumino/widgets": "^1.37.2",
     "es6-promise": "^4.0.5"
   },
   "devDependencies": {
diff --git a/examples/example-datagrid/package.json b/examples/example-datagrid/package.json
index d4ff14cf2..8444c0e37 100644
--- a/examples/example-datagrid/package.json
+++ b/examples/example-datagrid/package.json
@@ -1,16 +1,16 @@
 {
   "name": "@lumino/example-datagrid",
-  "version": "0.32.8",
+  "version": "0.32.9",
   "private": true,
   "scripts": {
     "build": "tsc && webpack",
     "clean": "rimraf build"
   },
   "dependencies": {
-    "@lumino/datagrid": "^0.36.8",
-    "@lumino/default-theme": "^0.22.8",
-    "@lumino/dragdrop": "^1.14.4",
-    "@lumino/widgets": "^1.37.1",
+    "@lumino/datagrid": "^0.36.9",
+    "@lumino/default-theme": "^0.22.9",
+    "@lumino/dragdrop": "^1.14.5",
+    "@lumino/widgets": "^1.37.2",
     "es6-promise": "^4.0.5"
   },
   "devDependencies": {
diff --git a/examples/example-datastore/package.json b/examples/example-datastore/package.json
index 73718a9b5..f9cef241b 100644
--- a/examples/example-datastore/package.json
+++ b/examples/example-datastore/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/example-datastore",
-  "version": "0.21.8",
+  "version": "0.21.9",
   "private": true,
   "scripts": {
     "build": "tsc && webpack",
@@ -13,8 +13,8 @@
     "@lumino/coreutils": "^1.12.1",
     "@lumino/datastore": "^0.18.4",
     "@lumino/disposable": "^1.10.4",
-    "@lumino/dragdrop": "^1.14.4",
-    "@lumino/widgets": "^1.37.1",
+    "@lumino/dragdrop": "^1.14.5",
+    "@lumino/widgets": "^1.37.2",
     "codemirror": "^5.48.2",
     "es6-promise": "^4.0.5",
     "websocket": "^1.0.28"
diff --git a/examples/example-dockpanel/package.json b/examples/example-dockpanel/package.json
index f9adcc301..7fc4f335c 100644
--- a/examples/example-dockpanel/package.json
+++ b/examples/example-dockpanel/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/example-dockpanel",
-  "version": "0.21.8",
+  "version": "0.21.9",
   "private": true,
   "scripts": {
     "build": "tsc && webpack",
@@ -8,10 +8,10 @@
   },
   "dependencies": {
     "@lumino/commands": "^1.21.1",
-    "@lumino/default-theme": "^0.22.8",
-    "@lumino/dragdrop": "^1.14.4",
+    "@lumino/default-theme": "^0.22.9",
+    "@lumino/dragdrop": "^1.14.5",
     "@lumino/messaging": "^1.10.3",
-    "@lumino/widgets": "^1.37.1",
+    "@lumino/widgets": "^1.37.2",
     "es6-promise": "^4.0.5"
   },
   "devDependencies": {
diff --git a/examples/example-menubar/package.json b/examples/example-menubar/package.json
index c0abd6b63..4c24ab849 100644
--- a/examples/example-menubar/package.json
+++ b/examples/example-menubar/package.json
@@ -1,15 +1,15 @@
 {
   "name": "@lumino/example-menubar",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "private": true,
   "scripts": {
     "build": "tsc && webpack",
     "clean": "rimraf build"
   },
   "dependencies": {
-    "@lumino/default-theme": "^0.22.8",
+    "@lumino/default-theme": "^0.22.9",
     "@lumino/messaging": "^1.10.3",
-    "@lumino/widgets": "^1.37.1",
+    "@lumino/widgets": "^1.37.2",
     "es6-promise": "^4.0.5"
   },
   "devDependencies": {
diff --git a/packages/application/package.json b/packages/application/package.json
index a008e099b..26d73d0b9 100644
--- a/packages/application/package.json
+++ b/packages/application/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/application",
-  "version": "1.31.3",
+  "version": "1.31.4",
   "description": "Lumino Pluggable Application",
   "homepage": "https://github.com/jupyterlab/lumino",
   "bugs": {
@@ -48,7 +48,7 @@
   "dependencies": {
     "@lumino/commands": "^1.21.1",
     "@lumino/coreutils": "^1.12.1",
-    "@lumino/widgets": "^1.37.1"
+    "@lumino/widgets": "^1.37.2"
   },
   "devDependencies": {
     "@microsoft/api-extractor": "^7.6.0",
diff --git a/packages/datagrid/package.json b/packages/datagrid/package.json
index 24df1142e..b6d6fb19c 100644
--- a/packages/datagrid/package.json
+++ b/packages/datagrid/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/datagrid",
-  "version": "0.36.8",
+  "version": "0.36.9",
   "description": "Lumino Tabular Data Grid",
   "homepage": "https://github.com/jupyterlab/lumino",
   "bugs": {
@@ -41,11 +41,11 @@
     "@lumino/coreutils": "^1.12.1",
     "@lumino/disposable": "^1.10.4",
     "@lumino/domutils": "^1.8.2",
-    "@lumino/dragdrop": "^1.14.4",
+    "@lumino/dragdrop": "^1.14.5",
     "@lumino/keyboard": "^1.8.2",
     "@lumino/messaging": "^1.10.3",
     "@lumino/signaling": "^1.11.1",
-    "@lumino/widgets": "^1.37.1"
+    "@lumino/widgets": "^1.37.2"
   },
   "devDependencies": {
     "rimraf": "^3.0.2",
diff --git a/packages/default-theme/package.json b/packages/default-theme/package.json
index 4738b410d..9d4b5d642 100644
--- a/packages/default-theme/package.json
+++ b/packages/default-theme/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/default-theme",
-  "version": "0.22.8",
+  "version": "0.22.9",
   "description": "Lumino Default Theme",
   "homepage": "https://github.com/jupyterlab/lumino",
   "bugs": {
@@ -29,8 +29,8 @@
     "url": "https://github.com/jupyterlab/lumino.git"
   },
   "dependencies": {
-    "@lumino/dragdrop": "^1.14.4",
-    "@lumino/widgets": "^1.37.1"
+    "@lumino/dragdrop": "^1.14.5",
+    "@lumino/widgets": "^1.37.2"
   },
   "publishConfig": {
     "access": "public"
diff --git a/packages/dragdrop/package.json b/packages/dragdrop/package.json
index 46a44777d..0f5cbbe2e 100644
--- a/packages/dragdrop/package.json
+++ b/packages/dragdrop/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/dragdrop",
-  "version": "1.14.4",
+  "version": "1.14.5",
   "description": "Lumino Drag and Drop",
   "homepage": "https://github.com/jupyterlab/lumino",
   "bugs": {
diff --git a/packages/widgets/package.json b/packages/widgets/package.json
index 935dbb207..989b3e105 100644
--- a/packages/widgets/package.json
+++ b/packages/widgets/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lumino/widgets",
-  "version": "1.37.1",
+  "version": "1.37.2",
   "description": "Lumino Widgets",
   "homepage": "https://github.com/jupyterlab/lumino",
   "bugs": {
@@ -61,7 +61,7 @@
     "@lumino/coreutils": "^1.12.1",
     "@lumino/disposable": "^1.10.4",
     "@lumino/domutils": "^1.8.2",
-    "@lumino/dragdrop": "^1.14.4",
+    "@lumino/dragdrop": "^1.14.5",
     "@lumino/keyboard": "^1.8.2",
     "@lumino/messaging": "^1.10.3",
     "@lumino/properties": "^1.8.2",