diff --git a/src/index.ts b/src/index.ts
index c7659ec..0737e5b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,7 +3,7 @@ import { createEditor, createModelReference, registerEditorOpenHandler } from '.
 import { updateUserConfiguration, registerConfigurations, registerDefaultConfigurations, onConfigurationChanged, getConfiguration, getUserConfiguration, onUserConfigurationChange } from './configuration'
 import { getMonacoLanguage, loadLanguage } from './languages'
 import { updateKeybindings, updateEditorKeybindingsMode } from './keybindings'
-import { generateAndInitializeWorkspace, initialize, initializePromise, isInitialized, registerServices, setUseGlobalPicker } from './services'
+import { generateAndInitializeWorkspace, initialize, initializePromise, isInitialized, registerFile, registerServices, setUseGlobalPicker } from './services'
 import './style'
 export * from './tools'
 
@@ -16,6 +16,7 @@ export {
   initializePromise,
   createEditor,
   createModelReference,
+  registerFile,
 
   registerConfigurations,
   registerDefaultConfigurations,
diff --git a/src/services.ts b/src/services.ts
index e908510..a54fc1c 100644
--- a/src/services.ts
+++ b/src/services.ts
@@ -19,12 +19,19 @@ import getWorkingCopyServiceOverride from '@codingame/monaco-vscode-working-copy
 import getEmmetServiceOverride from '@codingame/monaco-vscode-emmet-service-override'
 import { initialize as initializeServices } from 'vscode/services'
 import * as monaco from 'monaco-editor'
-import { initFile } from '@codingame/monaco-vscode-files-service-override'
+import { RegisteredFile, RegisteredFileSystemProvider, initFile, registerFileSystemOverlay } from '@codingame/monaco-vscode-files-service-override'
 import { IWorkbenchConstructionOptions, IWorkspaceProvider } from 'vscode/vscode/vs/workbench/browser/web.api'
 import EditorOpenHandlerRegistry from './tools/EditorOpenHandlerRegistry'
 import { whenReady as whenExtensionsReady } from './extensions'
 import 'vscode/localExtensionHost'
 
+const defaultFilesystemProvider = new RegisteredFileSystemProvider(false)
+registerFileSystemOverlay(1, defaultFilesystemProvider)
+
+export function registerFile (file: RegisteredFile): monaco.IDisposable {
+  return defaultFilesystemProvider.registerFile(file)
+}
+
 const editorOpenHandlerRegistry = new EditorOpenHandlerRegistry()
 
 let _useGlobalPicker: boolean = false