diff --git a/CHANGELOG b/CHANGELOG
index 5dd8af2..788e4f5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 - 0.1.13
 	* Remove sync on each get
+	* Upgrade shep to guarantee atomic state lock state
 - 0.1.12
 	* Raise correct exception from index store exists check
 - 0.1.11
diff --git a/requirements.txt b/requirements.txt
index f69f8df..384807c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@ leveldir~=0.3.0
 confini~=0.6.0
 #pyxdg~=0.27
 chainlib~=0.1.1
-shep~=0.2.5
+shep~=0.2.6