diff --git a/version.h b/version.h
index 77a5e47397..58161b1cf4 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.9.4"
-#define RUBY_RELEASE_DATE "2011-09-19"
+#define RUBY_RELEASE_DATE "2011-09-20"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
 #define RUBY_RELEASE_YEAR 2011
 #define RUBY_RELEASE_MONTH 9
-#define RUBY_RELEASE_DAY 19
+#define RUBY_RELEASE_DAY 20
 
 #include "ruby/version.h"