diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8668c18..d64d981 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,6 +12,10 @@ repos:
     - id: end-of-file-fixer
     - id: trailing-whitespace
     - id: check-executables-have-shebangs
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v3.3.1
+    hooks:
+      - id: pyupgrade
   - repo: https://github.com/psf/black
     rev: 22.12.0
     hooks:
diff --git a/pyproject.toml b/pyproject.toml
index f03d865..e6cc00f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,11 +23,11 @@ classifiers = [
     "Operating System :: POSIX :: Linux",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Topic :: System :: Systems Administration",
     "Topic :: Utilities",
 ]
@@ -36,7 +36,7 @@ keywords = [
     "rst",
     "linter",
 ]
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 dependencies = [
     # Ceiled due to DeprecationWarning: The frontend.OptionParser class will be
     # replaced by a subclass of argparse.ArgumentParser in Docutils 0.21 or later.
@@ -71,6 +71,7 @@ filterwarnings = [
 ]
 
 [[tool.mypy.overrides]]
+python_version = "3.8"
 module = [
     "doc8._version",
     "restructuredtext_lint",
@@ -78,6 +79,9 @@ module = [
 ]
 ignore_missing_imports = true
 
+[tool.pylint.MAIN]
+py-version = "3.8.0"
+
 [tool.pylint."MESSAGES CONTROL"]
 
 disable = [
diff --git a/src/doc8/checks.py b/src/doc8/checks.py
index 67c073d..6d9a574 100644
--- a/src/doc8/checks.py
+++ b/src/doc8/checks.py
@@ -313,5 +313,4 @@ def report_iter(self, parsed_file):
             checker_func = self._txt_checker
         else:
             checker_func = self._rst_checker
-        for issue in checker_func(parsed_file):
-            yield issue
+        yield from checker_func(parsed_file)
diff --git a/src/doc8/main.py b/src/doc8/main.py
index 2dfe85f..c061cc6 100644
--- a/src/doc8/main.py
+++ b/src/doc8/main.py
@@ -85,7 +85,7 @@ def parse_ignore_path_errors(entries):
 
 def from_ini(fp):
     parser = configparser.RawConfigParser()
-    with open(fp, "r", encoding="utf-8") as fh:
+    with open(fp, encoding="utf-8") as fh:
         parser.read_file(fh)
 
     cfg = {}
@@ -275,10 +275,14 @@ def validate(cfg, files, result=None):
                         line_num = "?"
                     if cfg.get("verbose"):
                         print(
-                            "    - %s:%s: %s %s" % (f.filename, line_num, code, message)
+                            "    - {}:{}: {} {}".format(
+                                f.filename, line_num, code, message
+                            )
                         )
                     elif not result.capture:
-                        print("%s:%s: %s %s" % (f.filename, line_num, code, message))
+                        print(
+                            "{}:{}: {} {}".format(f.filename, line_num, code, message)
+                        )
                     result.error(check_name, f.filename, line_num, code, message)
                     error_counts[check_name] += 1
             elif isinstance(c, checks.LineCheck):
@@ -293,12 +297,14 @@ def validate(cfg, files, result=None):
                             )
                         elif not result.capture:
                             print(
-                                "%s:%s: %s %s" % (f.filename, line_num, code, message)
+                                "{}:{}: {} {}".format(
+                                    f.filename, line_num, code, message
+                                )
                             )
                         result.error(check_name, f.filename, line_num, code, message)
                         error_counts[check_name] += 1
             else:
-                raise TypeError("Unknown check type: %s, %s" % (type(c), c))
+                raise TypeError("Unknown check type: {}, {}".format(type(c), c))
     return error_counts
 
 
@@ -321,7 +327,7 @@ def get_defaults():
     }
 
 
-class Result(object):
+class Result:
     def __init__(self):
         self.files_selected = 0
         self.files_ignored = 0
@@ -360,7 +366,7 @@ def report(self):
             lines.append("Detailed error counts:")
             for check_name in sorted(self.error_counts.keys()):
                 check_errors = self.error_counts[check_name]
-                lines.append("    - %s = %s" % (check_name, check_errors))
+                lines.append("    - {} = {}".format(check_name, check_errors))
 
         return "\n".join(lines)
 
diff --git a/src/doc8/parser.py b/src/doc8/parser.py
index f9c17aa..28652f7 100644
--- a/src/doc8/parser.py
+++ b/src/doc8/parser.py
@@ -22,7 +22,7 @@
 import restructuredtext_lint as rl
 
 
-class ParsedFile(object):
+class ParsedFile:
     FALLBACK_ENCODING = "utf-8"
 
     def __init__(self, filename, encoding=None, default_extension=""):
@@ -127,7 +127,7 @@ def contents(self):
         return self._content
 
     def __str__(self):
-        return "%s (%s, %s chars, %s lines)" % (
+        return "{} ({}, {} chars, {} lines)".format(
             self.filename,
             self.encoding,
             len(self.contents),
@@ -137,5 +137,5 @@ def __str__(self):
 
 def parse(filename, encoding=None, default_extension=""):
     if not os.path.isfile(filename):
-        raise IOError(errno.ENOENT, "File not found", filename)
+        raise OSError(errno.ENOENT, "File not found", filename)
     return ParsedFile(filename, encoding=encoding, default_extension=default_extension)
diff --git a/src/doc8/tests/test_checks.py b/src/doc8/tests/test_checks.py
index 79e0618..fb19ff7 100644
--- a/src/doc8/tests/test_checks.py
+++ b/src/doc8/tests/test_checks.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 #    Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
diff --git a/src/doc8/tests/test_main.py b/src/doc8/tests/test_main.py
index f52322c..8fcd595 100644
--- a/src/doc8/tests/test_main.py
+++ b/src/doc8/tests/test_main.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 import os
 from io import StringIO
 import unittest
@@ -79,7 +77,7 @@
     - doc8.checks.CheckValidity = 0"""
 
 
-class Capture(object):
+class Capture:
     """
     Context manager to capture output on stdout and stderr
     """
@@ -100,7 +98,7 @@ def __exit__(self, *args):
         sys.stderr = self.err
 
 
-class TmpFs(object):
+class TmpFs:
     """
     Context manager to create and clean a temporary file area for testing
     """
@@ -134,7 +132,7 @@ def expected(self, template):
         return template.format(path=self.path)
 
 
-class FakeResult(object):
+class FakeResult:
     """
     Minimum valid result returned from doc8
     """
diff --git a/src/doc8/utils.py b/src/doc8/utils.py
index b8bd08a..9606976 100644
--- a/src/doc8/utils.py
+++ b/src/doc8/utils.py
@@ -53,7 +53,7 @@ def path_ignorable(path):
                     if extension_matches(path):
                         yield (path, path_ignorable(path))
         else:
-            raise IOError("Invalid path: %s" % path)
+            raise OSError("Invalid path: %s" % path)
 
 
 def filtered_traverse(document, filter_func):
diff --git a/src/doc8/version.py b/src/doc8/version.py
index fe71aec..36e6f0e 100644
--- a/src/doc8/version.py
+++ b/src/doc8/version.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 # Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"); you may