diff --git a/version.h b/version.h
index 7b30a6534d..42f261ab61 100644
--- a/version.h
+++ b/version.h
@@ -5,8 +5,8 @@
 #define RUBY_PATCHLEVEL -1
 
 #define RUBY_RELEASE_YEAR 2019
-#define RUBY_RELEASE_MONTH 11
-#define RUBY_RELEASE_DAY 30
+#define RUBY_RELEASE_MONTH 12
+#define RUBY_RELEASE_DAY 1
 
 #include "ruby/version.h"