diff --git a/include/ruby/version.h b/include/ruby/version.h
index 924bfa8f91..d25008fad9 100644
--- a/include/ruby/version.h
+++ b/include/ruby/version.h
@@ -28,7 +28,7 @@
 
 /* API version */
 #define RUBY_API_VERSION_MAJOR 3
-#define RUBY_API_VERSION_MINOR 0
+#define RUBY_API_VERSION_MINOR 1
 #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)