diff --git a/version.h b/version.h
index 910b35ae52..0e7047b979 100644
--- a/version.h
+++ b/version.h
@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.8.8"
-#define RUBY_RELEASE_DATE "2010-12-11"
+#define RUBY_RELEASE_DATE "2010-12-21"
 #define RUBY_VERSION_CODE 188
-#define RUBY_RELEASE_CODE 20101211
+#define RUBY_RELEASE_CODE 20101221
 #define RUBY_PATCHLEVEL -1
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 8
 #define RUBY_RELEASE_YEAR 2010
 #define RUBY_RELEASE_MONTH 12
-#define RUBY_RELEASE_DAY 11
+#define RUBY_RELEASE_DAY 21
 
 #define NO_STRING_LITERAL_CONCATENATION 1
 #ifdef RUBY_EXTERN