diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5eff2181c..9cf431cbe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,9 @@ All notable changes to this project will be documented in this file, in reverse
 - [#15](https://github.com/zendframework/zend-cache/pull/15) fixes an issue
   observed on HHVM when merging a list of memcached servers to add to the
   storage resource.
+- [#17](https://github.com/zendframework/zend-cache/pull/17) Composer: moved
+  `zendframework/zend-serializer` from `require` to `require-dev` as using the
+  serializer is optional.
 
 ## 2.5.2 - 2015-07-16
 
diff --git a/composer.json b/composer.json
index 8b105252a..07ce398d2 100644
--- a/composer.json
+++ b/composer.json
@@ -16,10 +16,10 @@
         "php": ">=5.5",
         "zendframework/zend-stdlib": "~2.5",
         "zendframework/zend-servicemanager": "~2.5",
-        "zendframework/zend-serializer": "~2.5",
         "zendframework/zend-eventmanager": "~2.5"
     },
     "require-dev": {
+        "zendframework/zend-serializer": "~2.5", 
         "zendframework/zend-session": "~2.5",
         "fabpot/php-cs-fixer": "1.7.*",
         "phpunit/PHPUnit": "~4.0"