diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38a2d73..2de7299 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+### v0.4.0 / 2021-05-26
+
+* ADDED: ContentType can take an optional default charset 
+* FIXED: Binary HTTP format parses quoted tokens according to RFC 7230 section 3.2.6 
+* FIXED: When encoding structured events for HTTP transport, the content-type now includes the charset
+
 ### v0.3.1 / 2021-04-25
 
 * FIXED: Fixed exception when decoding from a rack source that uses InputWrapper 
diff --git a/lib/cloud_events/version.rb b/lib/cloud_events/version.rb
index 476e19a..872dd22 100644
--- a/lib/cloud_events/version.rb
+++ b/lib/cloud_events/version.rb
@@ -5,5 +5,5 @@ module CloudEvents
   # Version of the Ruby CloudEvents SDK
   # @return [String]
   #
-  VERSION = "0.3.1"
+  VERSION = "0.4.0"
 end