--- a/CHANGELOG	Thu Dec 21 04:35:40 2017 +0100
+++ b/CHANGELOG	Thu Dec 21 04:12:02 2017 +0100
@@ -1,6 +1,19 @@
 Changelog
 =========
 
+7.2.0 - in progress
+-------------------
+
+  * new algorithm for obshashrange discovery:
+
+    The new algorithm is fast, simpler to cache and with better complexicty. It
+    is able to handle repository of any size (naive python implementation is a
+    bit slow). Support for the previous experimental approach have been
+    dropped, please update both clients and servers. The new approach is still
+    hidden behind and experimental flag for now.
+
+topic (0.7.1)
+
 7.1.1 - in progress
 -------------------