diff --git a/public/codecov-128x128.png b/public/codecov-128x128.png
new file mode 100644
index 0000000..f4af772
Binary files /dev/null and b/public/codecov-128x128.png differ
diff --git a/public/codecov-16x16.png b/public/codecov-16x16.png
new file mode 100644
index 0000000..523debc
Binary files /dev/null and b/public/codecov-16x16.png differ
diff --git a/public/codecov-48x48.png b/public/codecov-48x48.png
new file mode 100644
index 0000000..9408dd4
Binary files /dev/null and b/public/codecov-48x48.png differ
diff --git a/public/icon.png b/public/icon.png
deleted file mode 100644
index fe31528..0000000
Binary files a/public/icon.png and /dev/null differ
diff --git a/public/manifest.firefox.json b/public/manifest.firefox.json
index 3e2e0cc..f116628 100644
--- a/public/manifest.firefox.json
+++ b/public/manifest.firefox.json
@@ -5,6 +5,12 @@
   "description": "Codecov Browser Extension",
   "version": "0.1.0",
 
+  "icons": {
+    "16": "codecov-16x16.png",
+    "48": "codecov-48x48.png",
+    "128": "codecov-128x128.png"
+  },
+
   "options_ui": {
     "page": "options.html"
   },
diff --git a/public/manifest.json b/public/manifest.json
index c490d3e..882d797 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -5,6 +5,12 @@
   "description": "Codecov Browser Extension",
   "version": "0.1.0",
 
+  "icons": {
+    "16": "codecov-16x16.png",
+    "48": "codecov-48x48.png",
+    "128": "codecov-128x128.png"
+  },
+
   "options_ui": {
     "page": "options.html"
   },