CHANGELOG.md in api_client-0.5.7 vs CHANGELOG.md in api_client-0.5.9

@@ -1,4 +1,12 @@
+# 0.5.9
+
+ * fix compatibility with ruby 1.8.x
+
+# 0.5.8
+
+ * fix the problem with strict_attr_reader and Array#flatten
+
 # 0.5.7
 
  * fix compatibility with hashie 2.1.0 and strict_attr_reader
 
 # 0.5.6