diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a06b195cb..661ae7c66 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -66,7 +66,7 @@ repos:
 # Python: Ruff linter & formatter
 #   https://docs.astral.sh/ruff/
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.8.6
+  rev: v0.9.1
   hooks:
     # Run the linter
     - id: ruff
diff --git a/examples/initialize_from_array/transformation_utilities.py b/examples/initialize_from_array/transformation_utilities.py
index adb33b2aa..8e92bc918 100644
--- a/examples/initialize_from_array/transformation_utilities.py
+++ b/examples/initialize_from_array/transformation_utilities.py
@@ -183,11 +183,11 @@ def __init__(self, x, y, z, px, py, pz, pt):
     def __repr__(self):
         mystr = ""
         for attr in self.attr_list:
-            mystr += f"self.{attr}={getattr(self,attr)}, "
+            mystr += f"self.{attr}={getattr(self, attr)}, "
         return mystr
 
     def __str__(self):
         mystr = ""
         for attr in self.attr_list:
-            mystr += f"self.{attr}={getattr(self,attr)}, "
+            mystr += f"self.{attr}={getattr(self, attr)}, "
         return mystr
diff --git a/examples/pytorch_surrogate_model/run_ml_surrogate_15_stage.py b/examples/pytorch_surrogate_model/run_ml_surrogate_15_stage.py
index a49a024e3..3539993ae 100644
--- a/examples/pytorch_surrogate_model/run_ml_surrogate_15_stage.py
+++ b/examples/pytorch_surrogate_model/run_ml_surrogate_15_stage.py
@@ -276,9 +276,9 @@ def surrogate_push(self, pc, step, period):
 
 
 def get_lattice_element_iter(sim, j):
-    assert (
-        0 <= j < len(sim.lattice)
-    ), f"Argument j must be a nonnegative integer satisfying 0 <= j < {len(sim.lattice)}, not {j}"
+    assert 0 <= j < len(sim.lattice), (
+        f"Argument j must be a nonnegative integer satisfying 0 <= j < {len(sim.lattice)}, not {j}"
+    )
     i = 0
     lat_it = sim.lattice.__iter__()
     next(lat_it)
diff --git a/examples/pytorch_surrogate_model/visualize_ml_surrogate_15_stage.py b/examples/pytorch_surrogate_model/visualize_ml_surrogate_15_stage.py
index a7ffd5097..6fada2371 100644
--- a/examples/pytorch_surrogate_model/visualize_ml_surrogate_15_stage.py
+++ b/examples/pytorch_surrogate_model/visualize_ml_surrogate_15_stage.py
@@ -88,9 +88,9 @@ def to_t(
         dpt = data_arr_s["momentum_t"]
 
     elif type(data_arr_s) is np.ndarray:
-        assert (
-            data_arr_s.shape[1] == 6
-        ), f"data_arr_s.shape={data_arr_s.shape} but data_arr_s must be an Nx6 array"
+        assert data_arr_s.shape[1] == 6, (
+            f"data_arr_s.shape={data_arr_s.shape} but data_arr_s must be an Nx6 array"
+        )
         dx, dy, dt, dpx, dpy, dpt = data_arr_s.T
     else:
         raise Exception(
@@ -111,9 +111,9 @@ def to_t(
         print("applying reference normalization")
         dpt /= ref_pz
     elif coord_type is TCoords.GLOBAL:
-        assert (
-            ref_z is not None
-        ), "Reference particle z coordinate is required to transform to global coordinates"
+        assert ref_z is not None, (
+            "Reference particle z coordinate is required to transform to global coordinates"
+        )
         print("target global coordinates")
         dt += ref_z
         dpx *= ref_pz
@@ -422,7 +422,7 @@ def plot_beam_df(
 
 t_offset = impactx_surrogate_ref_particle.loc[step, "t"] * micron
 fig, axT = plt.subplots(3, 3, figsize=(10, 8))
-fig.suptitle(f"initially, ct={impactx_surrogate_ref_particle.at[step,'t']:.2f} m")
+fig.suptitle(f"initially, ct={impactx_surrogate_ref_particle.at[step, 't']:.2f} m")
 
 plot_beam_df(
     beam_at_step,
@@ -459,7 +459,7 @@ def plot_beam_df(
         t_offset = impactx_surrogate_ref_particle.loc[step, "t"] * micron
         fig, axT = plt.subplots(3, 3, figsize=(10, 8))
         fig.suptitle(
-            f"stage {stage_i}, ct={impactx_surrogate_ref_particle.at[step,'t']:.2f} m"
+            f"stage {stage_i}, ct={impactx_surrogate_ref_particle.at[step, 't']:.2f} m"
         )
 
         plot_beam_df(
@@ -473,6 +473,6 @@ def plot_beam_df(
             z_ticks=[-107.3, -106.6],
         )
         if args.save_png:
-            plt.savefig(f"stage_{stage_i-1}_phase_spaces.png")
+            plt.savefig(f"stage_{stage_i - 1}_phase_spaces.png")
         else:
             plt.show()
diff --git a/setup.py b/setup.py
index dcf8bd749..fa49892d6 100644
--- a/setup.py
+++ b/setup.py
@@ -284,7 +284,7 @@ def build_extension(self, ext):
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
         (
-            "License :: OSI Approved :: " "BSD License"
+            "License :: OSI Approved :: BSD License"
         ),  # TODO: use real SPDX: BSD-3-Clause-LBNL
     ],
     # new PEP 639 format
diff --git a/src/python/impactx/dashboard/Toolbar/exportTemplate.py b/src/python/impactx/dashboard/Toolbar/exportTemplate.py
index cc00cd452..1fbf042e0 100644
--- a/src/python/impactx/dashboard/Toolbar/exportTemplate.py
+++ b/src/python/impactx/dashboard/Toolbar/exportTemplate.py
@@ -32,9 +32,7 @@ def build_distribution_list():
         )
     else:
         return (
-            f"distr = distribution.{distribution_name}(\n"
-            f"{distribution_parameters},\n"
-            f")"
+            f"distr = distribution.{distribution_name}(\n{distribution_parameters},\n)"
         )
 
 
@@ -45,7 +43,7 @@ def build_lattice_list():
     """
 
     lattice_elements = ",\n    ".join(
-        f'elements.{element["name"]}('
+        f"elements.{element['name']}("
         + ", ".join(
             f"{key}={value}"
             for key, value in parameter_input_checker_for_lattice(element).items()