diff --git a/version.h b/version.h
index 42982bc0da..be5fbf1e64 100644
--- a/version.h
+++ b/version.h
@@ -1,4 +1,4 @@
 #define RUBY_VERSION "1.6.6"
-#define RUBY_RELEASE_DATE "2002-01-28"
+#define RUBY_RELEASE_DATE "2002-02-01"
 #define RUBY_VERSION_CODE 166
-#define RUBY_RELEASE_CODE 20020128
+#define RUBY_RELEASE_CODE 20020201