diff --git a/README.md b/README.md
index 25862d1..f6b4b64 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ Example:
 uglifyjs ... --mangle --reserved 'Array,BigInteger,Boolean,ECPair,Function,Number,Point'
 ```
 
-**NOTE**: If you expect this library to run on an iOS 10 device, ensure that you are using [buffer@5.0.5](https://www.npmjs.com/package/buffer) or greater.
+**NOTE**: If you expect this library to run on an iOS 10 device, ensure that you are using [buffer@5.0.5](https://github.com/feross/buffer/pull/155) or greater.
 
 ### Flow