diff --git a/CHANGELOG.md b/CHANGELOG.md
index 05a379153..18a3d76a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.5.3 (unreleased)
+
+
+
 ## 1.5.2 (April 2, 2014)
 
 IMPROVEMENTS:
diff --git a/version.txt b/version.txt
index 4cda8f19e..b5b810d30 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.5.2
+1.5.3.dev