diff --git a/History.md b/History.md
index d8fb0a7..8f12010 100644
--- a/History.md
+++ b/History.md
@@ -1,3 +1,7 @@
+# UNRELEASED
+
+* fix bug w/ HostHeaderTransformer and binary data
+
 # 1.8.0 (2015-11-04)
 
 * pass socket errors up to top level