diff --git a/IPython/core/release.py b/IPython/core/release.py
index 25fb5b6..fc955c9 100644
--- a/IPython/core/release.py
+++ b/IPython/core/release.py
@@ -22,9 +22,9 @@ name = 'ipython'
 _version_major = 4
 _version_minor = 0
 _version_patch = 0
-_version_extra = 'dev'
+# _version_extra = 'dev'
 # _version_extra = 'rc1'
-# _version_extra = ''  # Uncomment this for full releases
+_version_extra = ''  # Uncomment this for full releases
 
 # release.codename is deprecated in 2.0, will be removed in 3.0
 codename = ''