diff --git a/src/_zkapauthorizer/_plugin.py b/src/_zkapauthorizer/_plugin.py
index 018c096e7d0a23f7b821755fe0092aeaec5acd65..3b321c7fe955e07f3b6df9dd1c133e90446fd85c 100644
--- a/src/_zkapauthorizer/_plugin.py
+++ b/src/_zkapauthorizer/_plugin.py
@@ -167,6 +167,7 @@ class ZKAPAuthorizer(object):
             get_passes,
         )
 
+
     def get_client_resource(self, node_config):
         from twisted.internet import reactor
         return resource_from_configuration(
diff --git a/src/_zkapauthorizer/resource.py b/src/_zkapauthorizer/resource.py
index fb85afabec9e1059839d37e1846747e0d2045671..fb7e61aab584103c48ffee628e8835d28b73d9bb 100644
--- a/src/_zkapauthorizer/resource.py
+++ b/src/_zkapauthorizer/resource.py
@@ -108,7 +108,6 @@ def from_configuration(node_config, store, redeemer=None):
             controller,
         ),
     )
-
     return root
 
 
diff --git a/src/_zkapauthorizer/tests/test_plugin.py b/src/_zkapauthorizer/tests/test_plugin.py
index 750f0b9093726efb740683cfd16d1d54f279c420..d49f00877248a4a3004c700642ddac6da885b1e3 100644
--- a/src/_zkapauthorizer/tests/test_plugin.py
+++ b/src/_zkapauthorizer/tests/test_plugin.py
@@ -124,6 +124,7 @@ from .matchers import (
     Provides,
 )
 
+
 SIGNING_KEY_PATH = FilePath(__file__).sibling(u"testing-signing.key")