diff --git a/include/ruby/version.h b/include/ruby/version.h
index 2b5afd8cd7..924bfa8f91 100644
--- a/include/ruby/version.h
+++ b/include/ruby/version.h
@@ -27,8 +27,8 @@
 #define RUBY_BIRTH_DAY 24
 
 /* API version */
-#define RUBY_API_VERSION_MAJOR 2
-#define RUBY_API_VERSION_MINOR 8
+#define RUBY_API_VERSION_MAJOR 3
+#define RUBY_API_VERSION_MINOR 0
 #define RUBY_API_VERSION_TEENY 0
 #define RUBY_API_VERSION_CODE (RUBY_API_VERSION_MAJOR*10000+RUBY_API_VERSION_MINOR*100+RUBY_API_VERSION_TEENY)