diff --git a/CHANGELOG.md b/CHANGELOG.md
index f825097..09478e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+* 0.3.0
+    * refactor - replace moshi with kotlinx.serialization ( #6 )
+    * feature - add ethChainId  ( f658925f )
+    * feature - throw more specific JsonRpcInvalidArgumentException ( a79b3a01 )
+    
 * 0.2.0
     * update to kethereum 0.76.1 [#5](https://github.com/uport-project/kotlin-common/pull/5)
     * [breaking] isolate implementation details for each module (#5)
diff --git a/README.md b/README.md
index 541980c..2f3e86d 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ allprojects {
 In your module `build.gradle` file, add:
 
 ```groovy
-def uport_kotlin_common_version = "0.2.0"
+def uport_kotlin_common_version = "0.3.0"
 dependencies {
     //...
     // core lib
diff --git a/build.gradle b/build.gradle
index b4f41fe..14697af 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@ buildscript {
         kethereum_version = "0.76.1"
         khex_version = "1.0.0-RC3"
 
-        current_release_version = "0.2.0"
+        current_release_version = "0.3.0"
     }
 
     repositories {