diff --git a/CHANGELOG.md b/CHANGELOG.md
index 606078e..0fe5562 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@ Changelog
 =========
 All notable changes to this project will be documented in this file.
 
+v1.0.35-alpha
+-------------
+
+### Changed
+
+- Fixed response struct unmarshalling issue
+
 v1.0.34-alpha
 -------------
 
diff --git a/README.md b/README.md
index b889e75..724a332 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Installation
 -----------------
 
 ```bash
-go get github.com/amir-the-h/okex@v1.0.34-alpha
+go get github.com/amir-the-h/okex@v1.0.35-alpha
 ```
 
 Usage
diff --git a/models/market/market_models.go b/models/market/market_models.go
index 7ebf748..aa7c96f 100644
--- a/models/market/market_models.go
+++ b/models/market/market_models.go
@@ -24,7 +24,7 @@ type (
 		Vol24h    okex.JSONFloat64    `json:"vol24h"`
 		SodUtc0   okex.JSONFloat64    `json:"sodUtc0"`
 		SodUtc8   okex.JSONFloat64    `json:"sodUtc8"`
-		InstType  okex.InstrumentType `json:"instType,string"`
+		InstType  okex.InstrumentType `json:"instType"`
 		TS        okex.JSONTime       `json:"ts"`
 	}
 	IndexTicker struct {