diff --git a/ext/nkf/nkf.c b/ext/nkf/nkf.c
index 73b616a..3d1ad42 100644
--- a/ext/nkf/nkf.c
+++ b/ext/nkf/nkf.c
@@ -9,7 +9,7 @@
 
 #define RUBY_NKF_REVISION "$Revision$"
 #define RUBY_NKF_VERSION NKF_VERSION " (" NKF_RELEASE_DATE ")"
-#define NKF_GEM_VERSION "0.1.3"
+#define NKF_GEM_VERSION "0.2.0"
 
 #include "ruby/ruby.h"
 #include "ruby/encoding.h"