diff --git a/keywords.txt b/keywords.txt
index 3b5fdf0f..150f81f9 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -176,6 +176,7 @@ shutdown	KEYWORD2
 #######################################
 
 RADIOLIB_PIN_UNUSED	LITERAL1
+RADIOLIB_VERSION	LITERAL1
 
 ERR_NONE	LITERAL1
 ERR_UNKNOWN	LITERAL1
diff --git a/src/TypeDef.h b/src/TypeDef.h
index 545359b7..90b417c5 100644
--- a/src/TypeDef.h
+++ b/src/TypeDef.h
@@ -1,11 +1,20 @@
 #ifndef _RADIOLIB_TYPES_H
 #define _RADIOLIB_TYPES_H
+
 #if ARDUINO >= 100
   #include "Arduino.h"
 #else
   #error "Unsupported Arduino version (< 1.0.0)"
 #endif
 
+// version definitions
+#define RADIOLIB_VERSION_MAJOR  (0x03)
+#define RADIOLIB_VERSION_MINOR  (0x00)
+#define RADIOLIB_VERSION_PATCH  (0x00)
+#define RADIOLIB_VERSION_EXTRA  (0x00)
+
+#define RADIOLIB_VERSION ((RADIOLIB_VERSION_MAJOR << 24) | (RADIOLIB_VERSION_MAJOR << 16) | (RADIOLIB_VERSION_MAJOR << 8) | (RADIOLIB_VERSION_EXTRA))
+
 /*
  * Uncomment to enable static-only memory management: no dynamic allocation will be performed.
  * Warning: Large static arrays will be created in some methods. It is not advised to send large packets in this mode.