diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cd7c3531..425c165f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -25,7 +25,7 @@ repos:
         args: [--prose-wrap=preserve]
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "f8a3f8c471fb698229face5ed7640a64900b781e" # frozen: v0.4.4
+    rev: "1dc9eb131c2ea4816c708e4d85820d2cc8542683" # frozen: v0.5.0
     hooks:
       - id: ruff
         args: ["--fix", "--show-fixes", "--exit-non-zero-on-fix"]
diff --git a/numpydoc/docscrape.py b/numpydoc/docscrape.py
index a241dc21..f3b4a0ce 100644
--- a/numpydoc/docscrape.py
+++ b/numpydoc/docscrape.py
@@ -711,23 +711,22 @@ def properties(self):
 
     @staticmethod
     def _should_skip_member(name, klass):
-        if (
+        return (
             # Namedtuples should skip everything in their ._fields as the
             # docstrings for each of the members is: "Alias for field number X"
             issubclass(klass, tuple)
             and hasattr(klass, "_asdict")
             and hasattr(klass, "_fields")
             and name in klass._fields
-        ):
-            return True
-        return False
+        )
 
     def _is_show_member(self, name):
-        if self.show_inherited_members:
-            return True  # show all class members
-        if name not in self._cls.__dict__:
-            return False  # class member is inherited, we do not show it
-        return True
+        return (
+            # show all class members
+            self.show_inherited_members
+            # or class member is not inherited
+            or name in self._cls.__dict__
+        )
 
 
 def get_doc_object(
diff --git a/numpydoc/docscrape_sphinx.py b/numpydoc/docscrape_sphinx.py
index 64588f55..ed389fb4 100644
--- a/numpydoc/docscrape_sphinx.py
+++ b/numpydoc/docscrape_sphinx.py
@@ -329,7 +329,7 @@ def _str_references(self):
             out += [".. only:: latex", ""]
             items = []
             for line in self["References"]:
-                m = re.match(r".. \[([a-z0-9._-]+)\]", line, re.I)
+                m = re.match(r".. \[([a-z0-9._-]+)\]", line, re.IGNORECASE)
                 if m:
                     items.append(m.group(1))
             out += ["   " + ", ".join([f"[{item}]_" for item in items]), ""]
diff --git a/numpydoc/hooks/utils.py b/numpydoc/hooks/utils.py
index 448e1245..6f40c69c 100644
--- a/numpydoc/hooks/utils.py
+++ b/numpydoc/hooks/utils.py
@@ -31,7 +31,7 @@ def find_project_root(srcs: Sequence[str]):
         `Black <https://github.com/psf/black/blob/main/src/black/files.py>`_.
     """
     if not srcs:
-        return Path().resolve(), "current directory"
+        return Path.cwd(), "current directory"
 
     common_path = Path(
         os.path.commonpath([Path(src).expanduser().resolve() for src in srcs])
diff --git a/numpydoc/numpydoc.py b/numpydoc/numpydoc.py
index 2a8e1066..a04443b3 100644
--- a/numpydoc/numpydoc.py
+++ b/numpydoc/numpydoc.py
@@ -58,7 +58,9 @@ def rename_references(app, what, name, obj, options, lines):
     references = set()
     for line in lines:
         line = line.strip()
-        m = re.match(r"^\.\. +\[(%s)\]" % app.config.numpydoc_citation_re, line, re.I)
+        m = re.match(
+            r"^\.\. +\[(%s)\]" % app.config.numpydoc_citation_re, line, re.IGNORECASE
+        )
         if m:
             references.add(m.group(1))
 
@@ -185,7 +187,7 @@ def mangle_docstrings(app, what, name, obj, options, lines):
     if what == "module":
         # Strip top title
         pattern = "^\\s*[#*=]{4,}\\n[a-z0-9 -]+\\n[#*=]{4,}\\s*"
-        title_re = re.compile(pattern, re.I | re.S)
+        title_re = re.compile(pattern, re.IGNORECASE | re.DOTALL)
         lines[:] = title_re.sub("", u_NL.join(lines)).split(u_NL)
     else:
         try:
diff --git a/numpydoc/validate.py b/numpydoc/validate.py
index c0409c71..138e9d48 100644
--- a/numpydoc/validate.py
+++ b/numpydoc/validate.py
@@ -23,7 +23,7 @@
 
 DIRECTIVES = ["versionadded", "versionchanged", "deprecated"]
 DIRECTIVE_PATTERN = re.compile(
-    r"^\s*\.\. ({})(?!::)".format("|".join(DIRECTIVES)), re.I | re.M
+    r"^\s*\.\. ({})(?!::)".format("|".join(DIRECTIVES)), re.IGNORECASE | re.MULTILINE
 )
 ALLOWED_SECTIONS = [
     "Parameters",