diff --git a/packages/pyodide-kernel-extension/package.json b/packages/pyodide-kernel-extension/package.json
index 8396550..cc0d468 100644
--- a/packages/pyodide-kernel-extension/package.json
+++ b/packages/pyodide-kernel-extension/package.json
@@ -54,7 +54,7 @@
     "@jupyterlite/server": "^0.5.0-alpha.0"
   },
   "devDependencies": {
-    "@jupyterlab/builder": "~4.2.1",
+    "@jupyterlab/builder": "~4.3.3",
     "rimraf": "^5.0.1",
     "typescript": "~5.2.2"
   },
diff --git a/yarn.lock b/yarn.lock
index 183d503..e8e9033 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2339,22 +2339,22 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@jupyterlab/builder@npm:~4.2.1":
-  version: 4.2.1
-  resolution: "@jupyterlab/builder@npm:4.2.1"
+"@jupyterlab/builder@npm:~4.3.3":
+  version: 4.3.3
+  resolution: "@jupyterlab/builder@npm:4.3.3"
   dependencies:
-    "@lumino/algorithm": ^2.0.1
-    "@lumino/application": ^2.3.1
-    "@lumino/commands": ^2.3.0
-    "@lumino/coreutils": ^2.1.2
-    "@lumino/disposable": ^2.1.2
-    "@lumino/domutils": ^2.0.1
-    "@lumino/dragdrop": ^2.1.4
-    "@lumino/messaging": ^2.0.1
-    "@lumino/properties": ^2.0.1
-    "@lumino/signaling": ^2.1.2
-    "@lumino/virtualdom": ^2.0.1
-    "@lumino/widgets": ^2.3.2
+    "@lumino/algorithm": ^2.0.2
+    "@lumino/application": ^2.4.1
+    "@lumino/commands": ^2.3.1
+    "@lumino/coreutils": ^2.2.0
+    "@lumino/disposable": ^2.1.3
+    "@lumino/domutils": ^2.0.2
+    "@lumino/dragdrop": ^2.1.5
+    "@lumino/messaging": ^2.0.2
+    "@lumino/properties": ^2.0.2
+    "@lumino/signaling": ^2.1.3
+    "@lumino/virtualdom": ^2.0.2
+    "@lumino/widgets": ^2.5.0
     ajv: ^8.12.0
     commander: ^9.4.1
     css-loader: ^6.7.1
@@ -2376,7 +2376,7 @@ __metadata:
     worker-loader: ^3.0.2
   bin:
     build-labextension: lib/build-labextension.js
-  checksum: d8ea62deab2866be6fd0147470bd2ebd4970d1f628428e3354f86e8b8121a83ce3074eeead65427f09042eec8d88b4d1f1c2830972fc529ba5a084ada6be63b0
+  checksum: d294979ef2b9a5ce6fe91fd64aef7023e05311a64a5b8e03955bd28bcf11999f1ecb796f35ed45467ad63d334c16d844049f49f2ed17c6f318cc1d4511fb0145
   languageName: node
   linkType: hard
 
@@ -2945,7 +2945,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@jupyterlite/pyodide-kernel-extension@workspace:packages/pyodide-kernel-extension"
   dependencies:
-    "@jupyterlab/builder": ~4.2.1
+    "@jupyterlab/builder": ~4.3.3
     "@jupyterlab/coreutils": ^6.1.1
     "@jupyterlite/contents": ^0.5.0-alpha.0
     "@jupyterlite/kernel": ^0.5.0-alpha.0
@@ -3302,7 +3302,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@lumino/application@npm:^2.3.0, @lumino/application@npm:^2.3.1, @lumino/application@npm:^2.4.1":
+"@lumino/application@npm:^2.3.0, @lumino/application@npm:^2.4.1":
   version: 2.4.1
   resolution: "@lumino/application@npm:2.4.1"
   dependencies:
@@ -3322,7 +3322,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@lumino/commands@npm:^2.2.0, @lumino/commands@npm:^2.3.0, @lumino/commands@npm:^2.3.1":
+"@lumino/commands@npm:^2.2.0, @lumino/commands@npm:^2.3.1":
   version: 2.3.1
   resolution: "@lumino/commands@npm:2.3.1"
   dependencies:
@@ -3426,7 +3426,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@lumino/widgets@npm:^1.37.2 || ^2.3.1, @lumino/widgets@npm:^2.3.1, @lumino/widgets@npm:^2.3.2, @lumino/widgets@npm:^2.5.0":
+"@lumino/widgets@npm:^1.37.2 || ^2.3.1, @lumino/widgets@npm:^2.3.1, @lumino/widgets@npm:^2.5.0":
   version: 2.5.0
   resolution: "@lumino/widgets@npm:2.5.0"
   dependencies: