Fixing a broken link

  I realized that I can actually fix this myself.
  After the 75th time navigating through the "broken" link I'm going to
  do just that.

README.md

@@ -19,7 +19,7 @@ In short, it's a signed JSON object that does something useful (for example, aut
 
 The first part is called the header.  It contains the necessary information for verifying the last part, the signature.  For example, which encryption method was used for signing and what key was used.
 
-The part in the middle is the interesting bit.  It's called the Claims and contains the actual stuff you care about.  Refer to [the RFC](http://self-issued.info/docs/draft-jones-json-web-token.html) for information about reserved keys and the proper way to add your own.
+The part in the middle is the interesting bit.  It's called the Claims and contains the actual stuff you care about.  Refer to [the RFC](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html) for information about reserved keys and the proper way to add your own.
 
 ## What's in the box?