diff --git a/CHANGELOG.md b/CHANGELOG.md
index bce6afe..5d9fd64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change Log
 
+## [4.0.3](https://github.com/plivo/plivo-go/tree/v4.0.3) (2018-10-01)
+- Added Trackable parameter in messages.
+
 ## [4.0.2](https://github.com/plivo/plivo-go/tree/v4.0.2) (2018-09-18)
 - Added parent_call_uuid parameter to filter calls.
 - Queued status added for filtering calls in queued status.
diff --git a/plivoclient.go b/plivoclient.go
index e9be396..57c42f4 100644
--- a/plivoclient.go
+++ b/plivoclient.go
@@ -17,7 +17,7 @@ import (
 
 const baseUrlString = "https://api.plivo.com/"
 
-const sdkVersion = "4.0.2"
+const sdkVersion = "4.0.3"
 
 type Client struct {
 	httpClient *http.Client