diff --git a/README.md b/README.md
index 8606d9a..5d0356b 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,8 @@ Joshi Koukousei Captcha Service is available on the [Firefox AWO!](https://addon
 How to Build
 ==============
 
+Be sure that git-lfs is installed or the extension will NOT work.
+
 Install [NodeJS](https://nodejs.org/) if you haven't already, I personally use the latest version of Node (v18 at the time of writing) on Linux x64.
 
 Install [PNPM](https://pnpm.io/)