diff --git a/version.h b/version.h
index f5cfdcd0bf..f0ab6f94d2 100644
--- a/version.h
+++ b/version.h
@@ -16,7 +16,7 @@
 
 #define RUBY_RELEASE_YEAR 2020
 #define RUBY_RELEASE_MONTH 10
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_DAY 31
 
 #include "ruby/version.h"