diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec461d3..ecf91f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 0.3.8 - 2017-06-09
+- Fixed JSON format in MERGE field's type is address [#24](https://github.com/treasure-data/embulk-output-mailchimp/pull/24)
+
 ## 0.3.7 - 2017-06-07
 - Added `ConfigException` while using not exists `list_id` [#23](https://github.com/treasure-data/embulk-output-mailchimp/pull/23)
 
diff --git a/build.gradle b/build.gradle
index b309786..eee4e89 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,7 +18,7 @@ configurations {
     provided
 }
 
-version = "0.3.7"
+version = "0.3.8"
 
 sourceCompatibility = 1.7
 targetCompatibility = 1.7