diff --git a/platforms/app/main.c b/platforms/app/main.c
index 36cfc79..f44a455 100644
--- a/platforms/app/main.c
+++ b/platforms/app/main.c
@@ -146,7 +146,7 @@ int split_argv(char *str, char** argv)
 }
 
 void print_version() {
-    puts("wasm3 v0.4.0 (" __DATE__ " " __TIME__ ", " M3_COMPILER_VER ", " M3_ARCH ")");
+    puts("wasm3 v" M3_VERSION " (" __DATE__ " " __TIME__ ", " M3_COMPILER_VER ", " M3_ARCH ")");
 }
 
 void print_usage() {
diff --git a/source/m3.h b/source/m3.h
index 78d142d..8ab947c 100644
--- a/source/m3.h
+++ b/source/m3.h
@@ -1,12 +1,18 @@
 //
 //  Wasm3, high performance WebAssembly interpreter
 //
-//  Copyright © 2019 Steven Massey, Volodymyr Shymanskyy. All rights reserved.
+//  Copyright © 2019 Steven Massey, Volodymyr Shymanskyy.
+//  All rights reserved.
 //
 
 #ifndef m3_h
 #define m3_h
 
+#define M3_VERSION_MAJOR 0
+#define M3_VERSION_MINOR 4
+#define M3_VERSION_REV   1
+#define M3_VERSION       "0.4.1"
+
 #include <stdlib.h>
 #include <stdint.h>
 #include <inttypes.h>