diff --git a/packages/collaboration-extension/src/filebrowser.ts b/packages/collaboration-extension/src/filebrowser.ts
index 60dcfdb4..000ee55d 100644
--- a/packages/collaboration-extension/src/filebrowser.ts
+++ b/packages/collaboration-extension/src/filebrowser.ts
@@ -9,6 +9,7 @@ import {
   IDefaultFileBrowser,
   IFileBrowserFactory
 } from '@jupyterlab/filebrowser';
+import { ITranslator } from '@jupyterlab/translation';
 
 import { CommandRegistry } from '@lumino/commands';
 
@@ -27,11 +28,12 @@ namespace CommandIDs {
 export const defaultFileBrowser: JupyterFrontEndPlugin<IDefaultFileBrowser> = {
   id: '@jupyter/collaboration-extension:defaultFileBrowser',
   provides: IDefaultFileBrowser,
-  requires: [IFileBrowserFactory],
+  requires: [IFileBrowserFactory, ITranslator],
   optional: [IRouter, JupyterFrontEnd.ITreeResolver, ILabShell],
   activate: async (
     app: JupyterFrontEnd,
     fileBrowserFactory: IFileBrowserFactory,
+    translator: ITranslator,
     router: IRouter | null,
     tree: JupyterFrontEnd.ITreeResolver | null,
     labShell: ILabShell | null
@@ -41,7 +43,8 @@ export const defaultFileBrowser: JupyterFrontEndPlugin<IDefaultFileBrowser> = {
     );
     const { commands } = app;
 
-    const drive = new YDrive(app.serviceManager.user);
+    const trans = translator.load('jupyter_collaboration');
+    const drive = new YDrive(app.serviceManager.user, trans);
     app.serviceManager.contents.addDrive(drive);
 
     // Manually restore and load the default file browser.
diff --git a/packages/docprovider/src/ydrive.ts b/packages/docprovider/src/ydrive.ts
index d42884de..79c200dc 100644
--- a/packages/docprovider/src/ydrive.ts
+++ b/packages/docprovider/src/ydrive.ts
@@ -9,6 +9,7 @@ import {
   YNotebook
 } from '@jupyter/ydoc';
 import { URLExt } from '@jupyterlab/coreutils';
+import { TranslationBundle } from '@jupyterlab/translation';
 import { Contents, Drive, User } from '@jupyterlab/services';
 import { WebSocketProvider } from './yprovider';
 
@@ -27,9 +28,10 @@ export class YDrive extends Drive {
    *
    * @param user - The user manager to add the identity to the awareness of documents.
    */
-  constructor(user: User.IManager) {
+  constructor(user: User.IManager, translator: TranslationBundle) {
     super({ name: 'YDrive' });
     this._user = user;
+    this._translator = translator;
     this._providers = new Map<string, WebSocketProvider>();
 
     this.sharedModelFactory = new SharedModelFactory(this._onCreate);
@@ -155,7 +157,8 @@ export class YDrive extends Drive {
         format: options.format,
         contentType: options.contentType,
         model: sharedModel,
-        user: this._user
+        user: this._user,
+        translator: this._translator
       });
 
       const key = `${options.contentType}:${options.format}:${options.path}`;
@@ -178,6 +181,7 @@ export class YDrive extends Drive {
   };
 
   private _user: User.IManager;
+  private _translator: TranslationBundle;
   private _providers: Map<string, WebSocketProvider>;
 }
 
diff --git a/packages/docprovider/src/yprovider.ts b/packages/docprovider/src/yprovider.ts
index bd34a576..c742eb9c 100644
--- a/packages/docprovider/src/yprovider.ts
+++ b/packages/docprovider/src/yprovider.ts
@@ -6,6 +6,7 @@
 import { URLExt } from '@jupyterlab/coreutils';
 import { showErrorMessage, Dialog } from '@jupyterlab/apputils';
 import { ServerConnection, User } from '@jupyterlab/services';
+import { TranslationBundle } from '@jupyterlab/translation';
 
 import { PromiseDelegate } from '@lumino/coreutils';
 import { IDisposable } from '@lumino/disposable';
@@ -53,6 +54,7 @@ export class WebSocketProvider implements IDocumentProvider {
     this._sharedModel = options.model;
     this._awareness = options.model.awareness;
     this._yWebsocketProvider = null;
+    this._translator = options.translator;
 
     const user = options.user;
 
@@ -133,9 +135,11 @@ export class WebSocketProvider implements IDocumentProvider {
       console.error('Document provider closed:', event.reason);
 
       showErrorMessage(
-        'Session expired',
-        'The document session expired. We need to reload this browser tab.',
-        [Dialog.okButton()]
+        this._translator.__('Session expired'),
+        this._translator.__(
+          'The document session expired. You need to reload this browser tab.'
+        ),
+        [Dialog.okButton({ label: this._translator.__('Reload') })]
       )
         .then(r => window.location.reload())
         .catch(e => window.location.reload());
@@ -154,6 +158,7 @@ export class WebSocketProvider implements IDocumentProvider {
   private _serverUrl: string;
   private _sharedModel: YDocument<DocumentChange>;
   private _yWebsocketProvider: YWebsocketProvider | null;
+  private _translator: TranslationBundle;
 }
 
 /**
@@ -193,5 +198,10 @@ export namespace WebSocketProvider {
      * The user data
      */
     user: User.IManager;
+
+    /**
+     * The jupyterlab translator
+     */
+    translator: TranslationBundle;
   }
 }