diff --git a/lib/iris/tests/integration/experimental/geovista/test_cube_to_poly.py b/lib/iris/tests/integration/experimental/geovista/test_cube_to_poly.py
index 614cf4e4a4..5fbe4143d0 100644
--- a/lib/iris/tests/integration/experimental/geovista/test_cube_to_poly.py
+++ b/lib/iris/tests/integration/experimental/geovista/test_cube_to_poly.py
@@ -4,7 +4,6 @@
 # See LICENSE in the root of the repository for full licensing details.
 """Integration tests for the `iris.experimental.geovista.cube_to_polydata` function."""
 
-
 import numpy as np
 
 from iris import load_cube
diff --git a/lib/iris/tests/integration/experimental/geovista/test_extract_unstructured_region.py b/lib/iris/tests/integration/experimental/geovista/test_extract_unstructured_region.py
index 87028acb48..53962baca0 100644
--- a/lib/iris/tests/integration/experimental/geovista/test_extract_unstructured_region.py
+++ b/lib/iris/tests/integration/experimental/geovista/test_extract_unstructured_region.py
@@ -4,7 +4,6 @@
 # See LICENSE in the root of the repository for full licensing details.
 """Integration tests for the `iris.experimental.geovista.extract_unstructured_region` function."""
 
-
 from geovista.geodesic import BBox
 
 from iris import load_cube
diff --git a/lib/iris/tests/unit/experimental/geovista/test_cube_to_polydata.py b/lib/iris/tests/unit/experimental/geovista/test_cube_to_polydata.py
index f515a533ac..9d71324d90 100644
--- a/lib/iris/tests/unit/experimental/geovista/test_cube_to_polydata.py
+++ b/lib/iris/tests/unit/experimental/geovista/test_cube_to_polydata.py
@@ -4,7 +4,6 @@
 # See LICENSE in the root of the repository for full licensing details.
 """Unit tests for the `iris.experimental.geovista.cube_to_polydata` function."""
 
-
 from unittest.mock import Mock
 
 from geovista import Transform