diff --git a/fast_obj.h b/fast_obj.h
index 726e9fd..b29c439 100644
--- a/fast_obj.h
+++ b/fast_obj.h
@@ -1,8 +1,11 @@
 /*
+ * fast_obj
+ *
+ * Version 1.0
  *
  * MIT License
  *
- * Copyright (c) 2018 Richard Knight
+ * Copyright (c) 2018-2020 Richard Knight
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -27,6 +30,10 @@
 #ifndef FAST_OBJ_HDR
 #define FAST_OBJ_HDR
 
+#define FAST_OBJ_VERSION_MAJOR  1
+#define FAST_OBJ_VERSION_MINOR  0
+#define FAST_OBJ_VERSION        ((FAST_OBJ_VERSION_MAJOR << 8) | FAST_OBJ_VERSION_MINOR)
+
 
 typedef struct
 {