diff --git a/tests/template_prefixes/loader_test.py b/tests/template_prefixes/loader_test.py
index bae0a019b..5b2af4db5 100644
--- a/tests/template_prefixes/loader_test.py
+++ b/tests/template_prefixes/loader_test.py
@@ -1,4 +1,5 @@
 """Tests loading template of jinja2 templates"""
+
 import os
 
 from jinja2 import Environment, FileSystemLoader
diff --git a/voila/handler.py b/voila/handler.py
index 0cd0007eb..22a541524 100644
--- a/voila/handler.py
+++ b/voila/handler.py
@@ -90,9 +90,9 @@ async def get_generator(self, path=None):
         # Adding request uri to kernel env
         request_info = {}
         request_info[ENV_VARIABLE.SCRIPT_NAME] = self.request.path
-        request_info[
-            ENV_VARIABLE.PATH_INFO
-        ] = ""  # would be /foo/bar if voila.ipynb/foo/bar was supported
+        request_info[ENV_VARIABLE.PATH_INFO] = (
+            ""  # would be /foo/bar if voila.ipynb/foo/bar was supported
+        )
         request_info[ENV_VARIABLE.QUERY_STRING] = str(self.request.query)
         request_info[ENV_VARIABLE.SERVER_SOFTWARE] = f"voila/{__version__}"
         request_info[ENV_VARIABLE.SERVER_PROTOCOL] = str(self.request.version)