diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index dbe104f9e6cd3146210474200931dcd2d98cdac3..8548c81791bf7ffe688781eb3d8b71c3f492bc3d 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,7 @@
 
+Drupal 7.38, xxxx-xx-xx (development version)
+-----------------------
+
 Drupal 7.37, 2015-05-07
 -----------------------
 - Fixed a regression in Drupal 7.36 which caused certain kinds of content types
diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index b572cde929482770aa3d14d18fd630c56fbfbff8..847bfc3a25d4b34f0bfaadd768c59897070ae045 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -8,7 +8,7 @@
 /**
  * The current system version.
  */
-define('VERSION', '7.37');
+define('VERSION', '7.38-dev');
 
 /**
  * Core API compatibility.