diff --git a/polytope_server/common/datasource/polytope.py b/polytope_server/common/datasource/polytope.py
index d5b387b..ffe2225 100644
--- a/polytope_server/common/datasource/polytope.py
+++ b/polytope_server/common/datasource/polytope.py
@@ -28,9 +28,8 @@
 import tempfile
 from pathlib import Path
 
-import yaml
-
 import polytope
+import yaml
 
 from ..caching import cache
 from . import datasource