diff --git a/CHANGELOG b/CHANGELOG
index bb86147..5900efa 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+- 0.2.1
+	* Implement shep 0.3.0
+	* Implement chainlib 0.4.x
 - 0.2.0
 	* Implement chainlib 0.3.0
 - 0.1.16
diff --git a/chainqueue/state.py b/chainqueue/state.py
index 9e983a1..a1e2ea2 100644
--- a/chainqueue/state.py
+++ b/chainqueue/state.py
@@ -9,7 +9,7 @@ logg = logging.getLogger(__name__)
 
 class Verify:
 
-    def verify(self, state_store, from_state, to_state):
+    def verify(self, state_store, key, from_state, to_state):
         to_state_name = state_store.name(to_state)
         m = None
         try:  
diff --git a/requirements.txt b/requirements.txt
index 86bebb1..e4b57cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 hexathon~=0.1.7
 leveldir~=0.3.0
 confini~=0.6.1
-chainlib~=0.3.0
-shep~=0.2.9
+chainlib~=0.4.0
+shep~=0.3.0
diff --git a/setup.cfg b/setup.cfg
index 2d4bd18..6bd6a0e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = chainqueue
-version = 0.2.0
+version = 0.2.1
 description = Generic blockchain transaction queue control
 author = Louis Holbrook
 author_email = dev@holbrook.no