diff --git a/version.h b/version.h
index b8e31bc5f8..03f74bda44 100644
--- a/version.h
+++ b/version.h
@@ -4,7 +4,7 @@
 
 #define RUBY_RELEASE_YEAR 2017
 #define RUBY_RELEASE_MONTH 10
-#define RUBY_RELEASE_DAY 5
+#define RUBY_RELEASE_DAY 6
 
 #include "ruby/version.h"