README.md in oj-2.17.1 vs README.md in oj-2.17.2

- old
+ new
@@ -168,24 +168,13 @@
   default for each mode which are :raise for :strict, :null for :null, and :word
   for :compat. Default is :auto.
 
 ## Releases
 
-**Release 2.17.1**
+**Release 2.17.2**
 
- - Added an option provide an alternative Hash class for loading.
-
- - Added the Oj::EasyHash class.
-
- - Fixed test failures on 32 bit machines.
-
- - Sped up mimic_JSON.
-
- - Added an option to omit Hash and Object attributes with nil values.
-
-**Release 2.16.1**
-
- - Thanks to hsbt for fixing a compile issue with Ruby 2.4.0-preview1.
+ - Worked around a problem with DateTime and ActiveSupport that causes a hang
+   when hour, minute, second, and some other methods are called from C.
 
 [Older release notes](http://www.ohler.com/dev/oj_misc/release_notes.html).
 
 ## Compatibility
 