diff --git a/manifest.json b/manifest.json
index 065baa1..8a26460 100644
--- a/manifest.json
+++ b/manifest.json
@@ -11,7 +11,9 @@
         "https://primevideo.com/*",
         "https://www.primevideo.com/*",
         "https://amazon.com/*",
-        "https://www.amazon.com/*"
+        "https://www.amazon.com/*",
+        "https://www.amazon.jp/*",
+        "https://www.amazon.co.jp/*"
       ],
       "js": [
         "dist/content.js"