diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5bb6c59e..335a04ba 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
     -   id: check-added-large-files
     -   id: check-toml
 -   repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 23.10.1
+    rev: 23.11.0
     hooks:
     -   id: black
         args: ["--line-length", "120"] # Adjust the max line length value as needed.
diff --git a/gprMax/fractals.py b/gprMax/fractals.py
index ffb2109e..3b03d8e7 100644
--- a/gprMax/fractals.py
+++ b/gprMax/fractals.py
@@ -262,8 +262,8 @@ class Grass:
         self.seed = seed
 
     def set_geometry_parameters(self):
-        """Sets randomly defined parameters that will be used to calculate 
-            blade and root geometries.
+        """Sets randomly defined parameters that will be used to calculate
+        blade and root geometries.
         """
 
         self.R1 = np.random.default_rng(seed=self.seed)