diff --git a/README.md b/README.md
index 5d0fad5..3487be8 100644
--- a/README.md
+++ b/README.md
@@ -201,6 +201,6 @@ foo.push(2);
 
 #### Contributors:
 
-This document started in 2009 as a collaboration of [@paul_irish](http://twitter.com/paul_irish) [@bentruyman](http://twitter.com/bentruyman) [@cowboy](http://twitter.com/cowboy) [@ajpiano](http://twitter.com/ajpiano)  [@SlexAxton](http://twitter.com/slexaxton) [@boazsender](http://twitter.com/boazsender) [@miketaylr](http://twitter.com/miketaylr) [@vladikoff](http://twitter.com/vladikoff) [@gf3](http://twitter.com/gf3) [@jon_neal](http://twitter.com/jon_neal) [@sambreed](http://twitter.com/sambreed) and [@iansym](http://twitter.com/iansym).
+This document started in 2009 as a collaboration of [@paul_irish](https://twitter.com/paul_irish) [@bentruyman](https://twitter.com/bentruyman) [@cowboy](https://twitter.com/cowboy) [@ajpiano](https://twitter.com/ajpiano)  [@SlexAxton](https://twitter.com/slexaxton) [@boazsender](https://twitter.com/boazsender) [@miketaylr](https://twitter.com/miketaylr) [@vladikoff](https://twitter.com/vladikoff) [@gf3](https://twitter.com/gf3) [@jon_neal](https://twitter.com/jon_neal) [@sambreed](https://twitter.com/sambreed) and [@iansym](https://twitter.com/iansym).
 
 It has since received contributions from over [100 developers](https://github.com/h5bp/Front-end-Developer-Interview-Questions/graphs/contributors).