diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dfa4a4c..1c72d21 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,14 +1,14 @@
 repos:
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
-  rev: v0.6.9
+  rev: v0.7.1
   hooks:
     # Run the linter.
     - id: ruff
     # Run the formatter.
     - id: ruff-format
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: 'v1.11.2'  # Use the sha / tag you want to point at
+  rev: 'v1.13.0'  # Use the sha / tag you want to point at
   hooks:
     - id: mypy
       additional_dependencies: [numpy, typing_extensions]
\ No newline at end of file
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 8bdccf7..d48732b 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -11,8 +11,6 @@
 # serve to show the default.
 
 import datetime
-import os
-import sys
 from importlib.metadata import version as get_version
 
 # If extensions (or modules to document with autodoc) are in another directory,
@@ -100,19 +98,6 @@
 # a list of builtin themes.
 html_theme = "sphinx_rtd_theme"
 
-on_rtd = os.environ.get("READTHEDOCS", None) == "True"
-
-if not on_rtd:  # only import and set the theme if we're building docs locally
-    try:
-        import sphinx_rtd_theme
-    except ImportError:
-        print(
-            "\n\nTheme not found. Please install Sphinx Read The Docs Themes using:\n\n"
-            "   pip install sphinx_rtd_theme\n"
-        )
-        sys.exit(1)
-    html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
-
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
diff --git a/pyvisa_py/protocols/hislip.py b/pyvisa_py/protocols/hislip.py
index 78f54a8..8df7723 100644
--- a/pyvisa_py/protocols/hislip.py
+++ b/pyvisa_py/protocols/hislip.py
@@ -232,7 +232,7 @@ def __init__(
             payload = (
                 (": " + str(receive_exact(sock, self.payload_length)))
                 if self.payload_length > 0
-                else b""
+                else ""
             )
             raise RuntimeError(
                 "expected message type '%s', received '%s%s'"
diff --git a/pyvisa_py/protocols/usbtmc.py b/pyvisa_py/protocols/usbtmc.py
index fe50cfe..90ac22d 100644
--- a/pyvisa_py/protocols/usbtmc.py
+++ b/pyvisa_py/protocols/usbtmc.py
@@ -167,7 +167,7 @@ class USBRaw(object):
     """
 
     #: Configuration number to be used. If None, the default will be used.
-    CONFIGURATION = None
+    CONFIGURATION: int | None = None
 
     #: Interface index it be used
     INTERFACE = (0, 0)