diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
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--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,6 +1,7 @@
 Next Release
 ============
 
+* [#333](/~https://github.com/intridea/grape/pull/333): Validation for array in params - [@flyerhzm](/~https://github.com/flyerhzm).
 * [#306](/~https://github.com/intridea/grape/issues/306): Added I18n support for all Grape exceptions - [@niedhui](/~https://github.com/niedhui).
 * [#294](/~https://github.com/intridea/grape/issues/294): Extracted `Grape::Entity` into a [grape-entity](/~https://github.com/agileanimal/grape-entity) gem - [@agileanimal](/~https://github.com/agileanimal).
 * [#309](/~https://github.com/intridea/grape/pull/309): An XML format API will return an error instead of returning a string representation of the response if the latter cannot be converted to XML - [@dblock](http://github.com/dblock).