diff --git a/ext/icon.png b/ext/icon.png
deleted file mode 100644
index 2ec925d0..00000000
Binary files a/ext/icon.png and /dev/null differ
diff --git a/ext/img/icon128.png b/ext/img/icon128.png
new file mode 100644
index 00000000..d22e3c88
Binary files /dev/null and b/ext/img/icon128.png differ
diff --git a/ext/img/icon16.png b/ext/img/icon16.png
new file mode 100644
index 00000000..4670bda0
Binary files /dev/null and b/ext/img/icon16.png differ
diff --git a/ext/img/icon19.png b/ext/img/icon19.png
new file mode 100644
index 00000000..f7d4c7a4
Binary files /dev/null and b/ext/img/icon19.png differ
diff --git a/ext/img/icon38.png b/ext/img/icon38.png
new file mode 100644
index 00000000..da7a9990
Binary files /dev/null and b/ext/img/icon38.png differ
diff --git a/ext/img/icon48.png b/ext/img/icon48.png
new file mode 100644
index 00000000..403bb60e
Binary files /dev/null and b/ext/img/icon48.png differ
diff --git a/ext/manifest.json b/ext/manifest.json
index cbe1e04a..11d00e5d 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -4,10 +4,22 @@
     "description":      "Yomichan Extension",
     "version":          "0.0.1",
 
-    "browser_action": {"default_icon": "icon.png"},
-    "background":     {"page": "bg/background.html"},
-    "options_page":   "bg/options.html",
-    "permissions":    ["storage"],
+    "icons": {
+        "16":  "img/icon16.png",
+        "48":  "img/icon48.png",
+        "128": "img/icon128.png"
+    },
+
+    "browser_action": {
+        "default_icon": {
+            "19": "img/icon19.png",
+            "38": "img/icon38.png"
+        }
+    },
+
+    "background":   {"page": "bg/background.html"},
+    "options_page": "bg/options.html",
+    "permissions":  ["storage"],
 
     "content_scripts": [{
         "matches": ["*://*/*"],