diff --git a/packages/overlays/index.js b/packages/overlays/index.js
index 7719aab23..a520b2394 100644
--- a/packages/overlays/index.js
+++ b/packages/overlays/index.js
@@ -1,5 +1,5 @@
 export { globalOverlaysStyle } from './src/globalOverlaysStyle.js';
-export { overlays } from './src/overlays.js';
+export { overlays, setOverlays } from './src/overlays.js';
 export { OverlaysManager } from './src/OverlaysManager.js';
 export { OverlayController } from './src/OverlayController.js';
 export { OverlayMixin } from './src/OverlayMixin.js';
diff --git a/packages/overlays/src/overlays.js b/packages/overlays/src/overlays.js
index 6cf881c9f..c844e77d2 100644
--- a/packages/overlays/src/overlays.js
+++ b/packages/overlays/src/overlays.js
@@ -1,5 +1,10 @@
 import { singletonManager } from 'singleton-manager';
 import { OverlaysManager } from './OverlaysManager.js';
 
-export const overlays =
+// eslint-disable-next-line import/no-mutable-exports
+export let overlays =
   singletonManager.get('@lion/overlays::overlays::0.15.x') || new OverlaysManager();
+
+export function setOverlays(newOverlays) {
+  overlays = newOverlays;
+}