diff --git a/Doxyfile b/Doxyfile
index f1a394b408..16db5f9b72 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "NuPIC Core"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.2.3.dev0
+PROJECT_NUMBER         = 0.2.4.dev0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/VERSION b/VERSION
index 76da8bee8b..7742ef2264 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.3.dev0
+0.2.4.dev0