diff --git a/CHANGES.txt b/CHANGES.txt
index b785e614..947387ce 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,6 +1,13 @@
 CHANGES
 =======
 
+0.4.0 (2018-07-11)
+------------------
+* Add more coverage with typing #147
+* Breaking change: typo send_inteval => send_interval #144 (thanks @gugu)
+* Breaking change: do not append api/v2/spans to the zipkin dress #150
+
+
 0.3.0 (2018-06-13)
 ------------------
 * Add support http.route tag for aiohttp #138
diff --git a/aiozipkin/__init__.py b/aiozipkin/__init__.py
index 3695085b..421968bf 100644
--- a/aiozipkin/__init__.py
+++ b/aiozipkin/__init__.py
@@ -29,7 +29,7 @@
 from .tracer import Tracer, create
 
 
-__version__ = '0.3.0'
+__version__ = '0.4.0'
 __all__ = (
     'Tracer',
     'Sampler',