diff --git a/CHANGELOG.md b/CHANGELOG.md
index 186e0456..cb51b933 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # aws-spot-price changelog
 
+# [0.4.0](https://github.com/hoonoh/aws-spot-price/compare/v0.3.0...v0.4.0) (2019-10-29)
+
+
+### Features
+
+* **cli:** add JSON output option ([#14](https://github.com/hoonoh/aws-spot-price/issues/14)) ([fe85751](https://github.com/hoonoh/aws-spot-price/commit/fe85751f7e82050f55a56aed3ad5c3195ad25380))
+
 # [0.3.0](https://github.com/hoonoh/aws-spot-price/compare/v0.2.0...v0.3.0) (2019-10-23)
 
 
@@ -58,6 +65,3 @@
 ### Features
 
 * log out selected options ([dc099e2](https://github.com/hoonoh/aws-spot-price/commit/dc099e2329d8b5914fea3aab709c2583e07dbb44))
-
-
-
diff --git a/package.json b/package.json
index 1fe92a03..2fdefcd5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "aws-spot-price",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "CLI utility to list current global AWS EC2 Spot Instance prices.",
   "keywords": [
     "aws",