diff --git a/index.js b/index.js
index 52cfcec..1fa0e91 100644
--- a/index.js
+++ b/index.js
@@ -972,7 +972,7 @@ const ContainerService = {
   },
 
   _refreshNeeded() {
-    return this.configureWindows();
+    return this._configureWindows();
   },
 
   _hideAllPanels() {
diff --git a/package.json b/package.json
index ecb0ea5..4a0172a 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "testpilot-containers",
   "title": "Containers Experiment",
   "description": "Containers works by isolating cookie jars using separate origin-attributes defined visually by colored ‘Container Tabs’. This add-on is a modified version of the containers feature for Firefox Test Pilot.",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "author": "Andrea Marchesini, Luke Crouch and Jonathan Kingston",
   "bugs": {
     "url": "https://github.com/mozilla/testpilot-containers/issues"
diff --git a/webextension/manifest.json b/webextension/manifest.json
index 893e2c1..f7e473a 100644
--- a/webextension/manifest.json
+++ b/webextension/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Containers Experiment",
-  "version": "1.0.3",
+  "version": "1.0.4",
 
   "description": "Containers works by isolating cookie jars using separate origin-attributes defined visually by colored ‘Container Tabs’. This add-on is a modified version of the containers feature for Firefox Test Pilot.",
   "icons": {