diff --git a/background.js b/background.js
new file mode 100644
index 0000000..a671d30
--- /dev/null
+++ b/background.js
@@ -0,0 +1,4 @@
+browser.action.onClicked.addListener((() =>
+  browser.tabs.create({
+    url: 'https://oddsquat.org'
+  })))
diff --git a/manifest.json b/manifest.json
index e25499b..0e15924 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,6 +2,9 @@
   "action": {
     "default_title": "Tabswitcher"
   },
+  "background": {
+    "scripts": ["background.js"]
+  },
   "browser_specific_settings": {
     "gecko": {
       "id": "tabswitcher@oddsquat.org",