diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cfb27e1..3d30f098 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,20 @@ All notable changes to Oragono will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/). For the purposes of versioning, we consider the "public API" to refer to the configuration files, CLI interface and database format.
 
 
+## Unreleased
+New release of Oragono!
+
+### Security
+
+### Added
+
+### Changed
+
+### Removed
+
+### Fixed
+
+
 ## [0.4.0] - 2016-11-03
 This release packs a more extensive oper privelege framework, bugfixes for capabilities/modes, support for new RP commands and more `RPL_ISUPPORT` tokens. In general, a bunch of new features and bugfixes to make using Oragono more smooth.
 
diff --git a/irc/constants.go b/irc/constants.go
index b29f7a10..077ead81 100644
--- a/irc/constants.go
+++ b/irc/constants.go
@@ -9,7 +9,7 @@ import "fmt"
 
 const (
 	// SemVer is the semantic version of Oragono.
-	SemVer = "0.4.0"
+	SemVer = "0.5.0-unreleased"
 )
 
 var (