diff --git a/src/ndhc-defines.h b/src/ndhc-defines.h
index 9f227e4..4f04672 100644
--- a/src/ndhc-defines.h
+++ b/src/ndhc-defines.h
@@ -3,7 +3,7 @@
 
 #define PID_FILE_DEFAULT "/var/run/ndhc.pid"
 #define PID_FILE_IFCH_DEFAULT "/var/run/ifchd.pid"
-#define NDHC_VERSION "1.5"
+#define NDHC_VERSION "2.0"
 #define MAX_BUF 1024
 
 #endif /* NDHC_DEFINES_H_ */