diff --git a/version.h b/version.h
index 128916f714..209a0bd097 100644
--- a/version.h
+++ b/version.h
@@ -16,7 +16,7 @@
 
 #define RUBY_RELEASE_YEAR 2021
 #define RUBY_RELEASE_MONTH 3
-#define RUBY_RELEASE_DAY 29
+#define RUBY_RELEASE_DAY 30
 
 #include "ruby/version.h"