diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2cbb0ecdf..b27cfaf0b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,8 +5,8 @@ project(MAPTK)
 # Versioning
 #
 set(MAPTK_VERSION_MAJOR 0)
-set(MAPTK_VERSION_MINOR 3)
-set(MAPTK_VERSION_PATCH 1)
+set(MAPTK_VERSION_MINOR 4)
+set(MAPTK_VERSION_PATCH 0)
 set(MAPTK_VERSION "${MAPTK_VERSION_MAJOR}.${MAPTK_VERSION_MINOR}.${MAPTK_VERSION_PATCH}")