--- a/README	Thu Jan 29 22:53:43 2015 +0900
+++ b/README	Thu Mar 05 10:44:43 2015 -0800
@@ -51,6 +51,12 @@
 Changelog
 =========
 
+5.1.1 --
+
+- debugobsconvert: fix invalid markers during conversion
+- discovery: cache some of the obs hash computation to improve performance (issue4518)
+- revset: fix some crash with (issue4515)
+
 5.1 -- 2015-01-30
 
 - evolve: explicitly disable bookmark on evolve (issue4432)