diff --git a/icon76.png b/icon76.png
new file mode 100644
index 0000000..712b103
Binary files /dev/null and b/icon76.png differ
diff --git a/manifest.json b/manifest.json
index b361f22..de5683f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -10,7 +10,10 @@
     "128": "icon128.png"
   },
   "browser_action": {
-    "default_icon": "icon.png",
+    "default_icon": {
+      "19": "icon.png",
+      "38": "icon76.png"
+    },
     "default_popup": "popup.html",
     "default_title": "Publish this"
   },