diff --git a/src/auryn_definitions.h b/src/auryn_definitions.h
index 48d7e9e7..d6285ca8 100644
--- a/src/auryn_definitions.h
+++ b/src/auryn_definitions.h
@@ -42,7 +42,7 @@ namespace mpi = boost::mpi;
 
 
 /*! The current Auryn version number */
-#define VERSION 0.3
+#define VERSION 0.4
 
 /*! Toggle between memory alignment for
  * SIMD code.