diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 2b8c869..1dd4515 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.6.3
+current_version = 0.6.4
 commit = True
 tag = True
 message = Release {new_version}
diff --git a/HISTORY.rst b/HISTORY.rst
index 4954e5e..dda250e 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -4,6 +4,9 @@ Changelog
 Unreleased
 ~~~~~~~~~~
 
+0.6.4 (2015-07-09)
+~~~~~~~~~~~~~~~~~~~
+
 - The default form definition validator now checks that there's at least one
   required E-Mail field.
 
diff --git a/setup.py b/setup.py
index 08be174..ac9d7dc 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 description = (
     'Common OneGov form library based on WTForms.'
 )
-version = '0.6.3'
+version = '0.6.4'
 
 
 def get_long_description():