diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ https://github.com/kawamataryo/sky-follower-bridge/assets/11070996/67bdd228-dc67
 ## 📦 Installation
 
 - [Chrome Web Store](https://chrome.google.com/webstore/detail/sky-follower-bridge/behhbpbpmailcnfbjagknjngnfdojpko)
-- [Firefox Add-ons](https://addons.mozilla.org/ja/firefox/addon/sky-follower-bridge/)
+- [Firefox Add-ons](https://addons.mozilla.org/en-US/firefox/addon/sky-follower-bridge/)
 - [Microsoft Edge Add-ons](https://microsoftedge.microsoft.com/addons/detail/sky-follower-bridge/dpeolmdblhfolkhlhbhlofkkpaojnnbb)
 
 ## 🚀 How to use