diff --git a/version.h b/version.h
index ddb378c8d6..7ee167cd21 100644
--- a/version.h
+++ b/version.h
@@ -15,8 +15,8 @@
 #define RUBY_PATCHLEVEL -1
 
 #define RUBY_RELEASE_YEAR 2020
-#define RUBY_RELEASE_MONTH 9
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_MONTH 10
+#define RUBY_RELEASE_DAY 1
 
 #include "ruby/version.h"