diff --git a/Makefile b/Makefile
index 7552ba5..d1e9268 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 SLUG = Fundamental
-VERSION = 0.5.1
+VERSION = 0.6.0dev
 
 SOURCES += $(wildcard src/*.cpp)