diff --git a/mantra/simplicial.py b/mantra/simplicial.py
index f47988e..44bcb5e 100644
--- a/mantra/simplicial.py
+++ b/mantra/simplicial.py
@@ -48,8 +48,7 @@ def __init__(
         self.manifold = manifold
         root += "/simplicial"
         self.version = version
-        self.url = f"https://github.com/aidos-lab/MANTRADataset/releases/\
-            {self.version}/download/{self.manifold}_manifolds.json.gz"
+        self.url = f"https://github.com/aidos-lab/MANTRADataset/releases/{self.version}/download/{self.manifold}_manifolds.json.gz"  # noqa
         super().__init__(root, transform, pre_transform, pre_filter)
         self.load(self.processed_paths[0])