diff --git a/docs/source/conf.py b/docs/source/conf.py
index 0cdb291..3a1a6eb 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -31,4 +31,4 @@ html_theme = 'nature'
 html_static_path = ['_static']
 
 html_favicon = '_static/kanji.png'
-html_logo = '_static/kanji.png'
\ No newline at end of file
+html_logo = '_static/kanji.png'
diff --git a/senju/haiku.py b/senju/haiku.py
index 506ef3f..11f0cef 100644
--- a/senju/haiku.py
+++ b/senju/haiku.py
@@ -41,7 +41,7 @@ def foobar():
     """WE KNOW"""
     a = 3
     b = 3
-    return a+b
+    return a + b
 
 
 @dataclass
diff --git a/senju/main.py b/senju/main.py
index bb42b1a..36d5954 100644
--- a/senju/main.py
+++ b/senju/main.py
@@ -14,11 +14,13 @@ app = Flask(__name__)
 
 store = StoreManager(Path("/tmp/store.db"))
 
+
 def foobar():
     """WE KNOW"""
     a = 3
     b = 3
-    return a+b
+    return a + b
+
 
 @app.route("/")
 def index_view():
diff --git a/senju/store_manager.py b/senju/store_manager.py
index ba78a2e..72a4561 100644
--- a/senju/store_manager.py
+++ b/senju/store_manager.py
@@ -11,11 +11,13 @@ from senju.haiku import Haiku
 
 DEFAULT_DB_PATH: Path = Path("/var/lib/senju.json")
 
+
 def foobar():
     """WE KNOW"""
     a = 3
     b = 3
-    return a+b
+    return a + b
+
 
 class StoreManager:
     __slots__ = "_db", "logger"