diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e01d6a37..4de59323 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -43,13 +43,12 @@ repos:
   rev: v0.6.9
   hooks:
   - id: ruff
-    # Next line if for documenation cod snippets
-    exclude: '^[^_].*_\.py$'
     args:
     - --line-length=120
     - --fix
     - --exit-non-zero-on-fix
     - --preview
+    - --exclude=docs/**/*_.py
 - repo: https://github.com/sphinx-contrib/sphinx-lint
   rev: v1.0.0
   hooks:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e756cd6..b10243c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -46,6 +46,8 @@ Keep it human-readable, your future self will thank you!
 - Feature: New `Boolean1DMask` class. Enables rollout training for limited area models. [#79](https://github.com/ecmwf/anemoi-training/pulls/79)
 
 ### Fixed
+
+- Fix pre-commit regex
 - Mlflow-sync to handle creation of new experiments in the remote server [#83] (https://github.com/ecmwf/anemoi-training/pull/83)
 - Fix for multi-gpu when using mlflow due to refactoring of _get_mlflow_run_params function [#99] (https://github.com/ecmwf/anemoi-training/pull/99)
 - ci: fix pyshtools install error (#100) https://github.com/ecmwf/anemoi-training/pull/100
diff --git a/docs/conf.py b/docs/conf.py
index 4756af86..dc7a24d9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,3 +1,12 @@
+# (C) Copyright 2024 Anemoi contributors.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+#
+# In applying this licence, ECMWF does not waive the privileges and immunities
+# granted to it by virtue of its status as an intergovernmental organisation
+# nor does it submit to any jurisdiction.
+
 # Configuration file for the Sphinx documentation builder.
 #
 # This file only contains a selection of the most common options. For a full
@@ -13,10 +22,11 @@
 import datetime
 import os
 import sys
+from pathlib import Path
 
 read_the_docs_build = os.environ.get("READTHEDOCS", None) == "True"
 
-sys.path.insert(0, os.path.join(os.path.abspath(".."), "src"))
+sys.path.insert(0, Path("..").absolute() / "src")
 
 
 source_suffix = ".rst"
@@ -32,11 +42,10 @@
 
 author = "Anemoi contributors"
 
-year = datetime.datetime.now().year
+year = datetime.datetime.now(tz="UTC").year
 years = "2024" if year == 2024 else f"2024-{year}"
 
-copyright = f"{years}, Anemoi contributors"
-
+copyright = f"{years}, Anemoi contributors"  # noqa: A001
 
 try:
     from anemoi.training._version import __version__
@@ -64,7 +73,7 @@
 ]
 
 # Add any paths that contain templates here, relative to this directory.
-# templates_path = ["_templates"]
+# templates_path = ["_templates"] # noqa: ERA001
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
diff --git a/src/anemoi/training/__init__.py b/src/anemoi/training/__init__.py
index 7b9efcd6..af4a3aea 100644
--- a/src/anemoi/training/__init__.py
+++ b/src/anemoi/training/__init__.py
@@ -11,7 +11,7 @@
 try:
     # NOTE: the `_version.py` file must not be present in the git repository
     #   as it is generated by setuptools at install time
-    from ._version import __version__  # type: ignore
+    from ._version import __version__
 except ImportError:  # pragma: no cover
     # Local copy or not installed with setuptools
     __version__ = "999"
diff --git a/src/anemoi/training/diagnostics/callbacks/__init__.py b/src/anemoi/training/diagnostics/callbacks/__init__.py
index 3968da77..f6a7b894 100644
--- a/src/anemoi/training/diagnostics/callbacks/__init__.py
+++ b/src/anemoi/training/diagnostics/callbacks/__init__.py
@@ -10,10 +10,11 @@
 from __future__ import annotations
 
 import logging
+from collections.abc import Iterable
 from datetime import timedelta
 from typing import TYPE_CHECKING
+from typing import Any
 from typing import Callable
-from typing import Iterable
 
 from hydra.utils import instantiate
 from omegaconf import DictConfig
@@ -29,8 +30,8 @@
 LOGGER = logging.getLogger(__name__)
 
 
-def nestedget(conf: DictConfig, key, default):
-    """Get a nested key from a DictConfig object
+def nestedget(conf: DictConfig, key: str, default: Any) -> Any:
+    """Get a nested key from a DictConfig object.
 
     E.g.
     >>> nestedget(config, "diagnostics.log.wandb.enabled", False)
@@ -56,7 +57,7 @@ def nestedget(conf: DictConfig, key, default):
 
 
 def _get_checkpoint_callback(config: DictConfig) -> list[AnemoiCheckpoint] | None:
-    """Get checkpointing callback"""
+    """Get checkpointing callback."""
     if not config.diagnostics.get("enable_checkpointing", True):
         return []
 
@@ -114,8 +115,7 @@ def _get_checkpoint_callback(config: DictConfig) -> list[AnemoiCheckpoint] | Non
                         ),
                     ]
                 )
-            else:
-                LOGGER.debug("Not setting up a checkpoint callback with %s", save_key)
+            LOGGER.debug("Not setting up a checkpoint callback with %s", save_key)
     else:
         # the tensorboard logger + pytorch profiler cause pickling errors when writing checkpoints
         LOGGER.warning("Profiling is enabled - will not write any training or inference model checkpoints!")
@@ -123,19 +123,16 @@ def _get_checkpoint_callback(config: DictConfig) -> list[AnemoiCheckpoint] | Non
 
 
 def _get_config_enabled_callbacks(config: DictConfig) -> list[Callback]:
-    """Get callbacks that are enabled in the config as according to CONFIG_ENABLED_CALLBACKS
-
-    Provides backwards compatibility
-    """
+    """Get callbacks that are enabled in the config as according to CONFIG_ENABLED_CALLBACKS."""
     callbacks = []
 
-    def check_key(config, key: str | Iterable[str] | Callable[[DictConfig], bool]):
+    def check_key(config: dict, key: str | Iterable[str] | Callable[[DictConfig], bool]) -> bool:
         """Check key in config."""
         if isinstance(key, Callable):
             return key(config)
-        elif isinstance(key, str):
+        if isinstance(key, str):
             return nestedget(config, key, False)
-        elif isinstance(key, Iterable):
+        if isinstance(key, Iterable):
             return all(nestedget(config, k, False) for k in key)
         return nestedget(config, key, False)
 
@@ -146,7 +143,7 @@ def check_key(config, key: str | Iterable[str] | Callable[[DictConfig], bool]):
     return callbacks
 
 
-def get_callbacks(config: DictConfig) -> list[Callback]:  # noqa: C901
+def get_callbacks(config: DictConfig) -> list[Callback]:
     """Setup callbacks for PyTorch Lightning trainer.
 
     Set `config.diagnostics.callbacks` to a list of callback configurations
@@ -180,7 +177,6 @@ def get_callbacks(config: DictConfig) -> list[Callback]:  # noqa: C901
         A list of PyTorch Lightning callbacks
 
     """
-
     trainer_callbacks: list[Callback] = []
 
     # Get Checkpoint callback
@@ -189,14 +185,15 @@ def get_callbacks(config: DictConfig) -> list[Callback]:  # noqa: C901
         trainer_callbacks.extend(checkpoint_callback)
 
     # Base callbacks
-    for callback in config.diagnostics.get("callbacks", None) or []:
-        # Instantiate new callbacks
-        trainer_callbacks.append(instantiate(callback, config))
+    trainer_callbacks.extend(
+        instantiate(callback, config) for callback in config.diagnostics.get("callbacks", None) or []
+    )
 
     # Plotting callbacks
-    for callback in config.diagnostics.plot.get("callbacks", None) or []:
-        # Instantiate new callbacks
-        trainer_callbacks.append(instantiate(callback, config))
+
+    trainer_callbacks.extend(
+        instantiate(callback, config) for callback in config.diagnostics.plot.get("callbacks", None) or []
+    )
 
     # Extend with config enabled callbacks
     trainer_callbacks.extend(_get_config_enabled_callbacks(config))
diff --git a/src/anemoi/training/train/forecaster.py b/src/anemoi/training/train/forecaster.py
index 705aa2ff..ebba3c6d 100644
--- a/src/anemoi/training/train/forecaster.py
+++ b/src/anemoi/training/train/forecaster.py
@@ -157,8 +157,7 @@ def get_loss_function(
         scalars: Union[dict[str, tuple[Union[int, tuple[int, ...], torch.Tensor]]], None] = None,  # noqa: FA100
         **kwargs,
     ) -> Union[torch.nn.Module, torch.nn.ModuleList]:  # noqa: FA100
-        """
-        Get loss functions from config.
+        """Get loss functions from config.
 
         Can be ModuleList if multiple losses are specified.
 
@@ -329,8 +328,7 @@ def rollout_step(
         training_mode: bool = True,
         validation_mode: bool = False,
     ) -> Generator[tuple[Union[torch.Tensor, None], dict, list], None, None]:  # noqa: FA100
-        """
-        Rollout step for the forecaster.
+        """Rollout step for the forecaster.
 
         Will run pre_processors on batch, but not post_processors on predictions.