diff --git a/porter/main.py b/porter/main.py
index b6bf5bd..2e4cfac 100644
--- a/porter/main.py
+++ b/porter/main.py
@@ -98,8 +98,14 @@ def __init__(self,
             BlockchainInterfaceFactory.initialize_interface(eth_provider_uri=eth_provider_uri)
 
         self.eth_provider_uri = eth_provider_uri
-        self.registry = registry or InMemoryContractRegistry.from_latest_publication(network=domain)
-        self.application_agent = ContractAgency.get_agent(TACoApplicationAgent, registry=self.registry, provider_uri=self.eth_provider_uri)
+        self.registry = registry or InMemoryContractRegistry.from_latest_publication(
+            network=domain
+        )
+        self.application_agent = ContractAgency.get_agent(
+            TACoApplicationAgent,
+            registry=self.registry,
+            provider_uri=self.eth_provider_uri,
+        )
 
         super().__init__(save_metadata=True, domain=domain, node_class=node_class, *args, **kwargs)