Add Workiva to list of companies using Go
diff --git a/GoUsers.md b/GoUsers.md
index add652a..8deed16 100644
--- a/GoUsers.md
+++ b/GoUsers.md
@@ -239,6 +239,7 @@
* [Weave](http://www.getweave.com)
* [Whim](http://joinwhim.com/) - [meetup](http://www.meetup.com/golangsf/events/223166815/), [tweet](https://twitter.com/_peggyli/status/629176462155755520)
* [Wikia](http://www.wikia.com)
+ * [Workiva](https://www.workiva.com/) - [github](https://github.com/workiva/go-datastructures)
* [Yahoo](http://yahoo.com) - [github](https://github.com/yahoo/webseclab)
* [Yik Yak](http://www.yikyakapp.com/) - [tweet](https://twitter.com/ardanlab/status/629002599484813312/photo/1)
* [ZITEC](http://www.zitec.de)