diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 34799a4f..cab6a900 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -2,14 +2,14 @@ exclude: 'dev'
 
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.5.0
+  rev: v5.0.0
   hooks:
   - id: check-merge-conflict  # checks for files that contain merge conflict strings
   - id: check-toml  # checks toml files for parseable syntax
   - id: debug-statements  # checks for debugger imports and py37+ `breakpoint()` calls in python source
 
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.4.4
+  rev: v0.9.3
   hooks:
     # Run the linter.
     - id: ruff
diff --git a/discretisedfield/io/ovf.py b/discretisedfield/io/ovf.py
index 846802a4..c53600e8 100644
--- a/discretisedfield/io/ovf.py
+++ b/discretisedfield/io/ovf.py
@@ -61,9 +61,9 @@ def _to_ovf(
             # Desc: File generated by Field class
             # meshunit: {self.mesh.region.units[0]}
             # meshtype: rectangular
-            # xbase: {self.mesh.region.pmin[0] + self.mesh.cell[0]/2}
-            # ybase: {self.mesh.region.pmin[1] + self.mesh.cell[1]/2}
-            # zbase: {self.mesh.region.pmin[2] + self.mesh.cell[2]/2}
+            # xbase: {self.mesh.region.pmin[0] + self.mesh.cell[0] / 2}
+            # ybase: {self.mesh.region.pmin[1] + self.mesh.cell[1] / 2}
+            # zbase: {self.mesh.region.pmin[2] + self.mesh.cell[2] / 2}
             # xnodes: {self.mesh.n[0]}
             # ynodes: {self.mesh.n[1]}
             # znodes: {self.mesh.n[2]}
@@ -172,7 +172,7 @@ def _from_ovf(cls, filename):
             # >>> READ DATA <<<
             if mode == "binary":
                 # OVF2 uses little-endian and OVF1 uses big-endian
-                format = f'{"<" if ovf_v2 else ">"}{"d" if nbytes == 8 else "f"}'
+                format = f"{'<' if ovf_v2 else '>'}{'d' if nbytes == 8 else 'f'}"
 
                 test_value = struct.unpack(format, f.read(nbytes))[0]
                 check = {4: 1234567.0, 8: 123456789012345.0}
diff --git a/discretisedfield/plotting/util.py b/discretisedfield/plotting/util.py
index 62997ccd..365c3c3a 100644
--- a/discretisedfield/plotting/util.py
+++ b/discretisedfield/plotting/util.py
@@ -143,5 +143,5 @@ def _pyvista_save_to_file(filename, plotter):
     else:
         raise ValueError(
             f"{extension} extension is not supported. The supported formats are"
-            f" {', '.join(screenshot+graphic)}."
+            f" {', '.join(screenshot + graphic)}."
         )
diff --git a/discretisedfield/tests/test_plotting.py b/discretisedfield/tests/test_plotting.py
index f36a1693..d6c1990f 100644
--- a/discretisedfield/tests/test_plotting.py
+++ b/discretisedfield/tests/test_plotting.py
@@ -34,9 +34,9 @@ def test_pyvista_valid_filename_extensions_screenshot(extension):
 
     try:
         plot_util._pyvista_save_to_file(filename, plotter)
-        assert os.path.exists(
-            filename
-        ), f"File with extension {extension} was not created."
+        assert os.path.exists(filename), (
+            f"File with extension {extension} was not created."
+        )
     finally:
         os.remove(filename)
 
@@ -56,8 +56,8 @@ def test_pyvista_valid_filename_extensions_save_graphic(extension):
 
     try:
         plot_util._pyvista_save_to_file(filename, plotter)
-        assert os.path.exists(
-            filename
-        ), f"File with extension {extension} was not created."
+        assert os.path.exists(filename), (
+            f"File with extension {extension} was not created."
+        )
     finally:
         os.remove(filename)