Ent-Changes.md in sidekiq-5.1.1 vs Ent-Changes.md in sidekiq-5.1.2

@@ -2,9 +2,15 @@
 
 [Sidekiq Changes](https://github.com/mperham/sidekiq/blob/master/Changes.md) | [Sidekiq Pro Changes](https://github.com/mperham/sidekiq/blob/master/Pro-Changes.md) | [Sidekiq Enterprise Changes](https://github.com/mperham/sidekiq/blob/master/Ent-Changes.md)
 
 Please see [http://sidekiq.org/](http://sidekiq.org/) for more details and how to buy.
 
+HEAD
+-------------
+
+- Fix Lua error in concurrent rate limiter under heavy contention
+- Remove superfluous `freeze` calls on Strings [#3759]
+
 1.7.0
 -------------
 
 - **NEW FEATURE** [Rolling restarts](https://github.com/mperham/sidekiq/wiki/Ent-Rolling-Restarts) - great for long running jobs!
 - Adjust middleware so unique jobs that don't push aren't registered in a Batch [#3662]