diff --git a/lib/importlib_metadata/__init__.py b/lib/importlib_metadata/__init__.py
index 5ac8be23..29ce1175 100644
--- a/lib/importlib_metadata/__init__.py
+++ b/lib/importlib_metadata/__init__.py
@@ -956,13 +956,26 @@ class PathDistribution(Distribution):
         normalized name from the file system path.
         """
         stem = os.path.basename(str(self._path))
-        return self._name_from_stem(stem) or super()._normalized_name
+        return (
+            pass_none(Prepared.normalize)(self._name_from_stem(stem))
+            or super()._normalized_name
+        )
 
-    def _name_from_stem(self, stem):
-        name, ext = os.path.splitext(stem)
+    @staticmethod
+    def _name_from_stem(stem):
+        """
+        >>> PathDistribution._name_from_stem('foo-3.0.egg-info')
+        'foo'
+        >>> PathDistribution._name_from_stem('CherryPy-3.0.dist-info')
+        'CherryPy'
+        >>> PathDistribution._name_from_stem('face.egg-info')
+        'face'
+        >>> PathDistribution._name_from_stem('foo.bar')
+        """
+        filename, ext = os.path.splitext(stem)
         if ext not in ('.dist-info', '.egg-info'):
             return
-        name, sep, rest = stem.partition('-')
+        name, sep, rest = filename.partition('-')
         return name
 
 
@@ -1002,6 +1015,15 @@ def version(distribution_name):
     return distribution(distribution_name).version
 
 
+_unique = functools.partial(
+    unique_everseen,
+    key=operator.attrgetter('_normalized_name'),
+)
+"""
+Wrapper for ``distributions`` to return unique distributions by name.
+"""
+
+
 def entry_points(**params) -> Union[EntryPoints, SelectableGroups]:
     """Return EntryPoint objects for all installed packages.
 
@@ -1019,10 +1041,8 @@ def entry_points(**params) -> Union[EntryPoints, SelectableGroups]:
 
     :return: EntryPoints or SelectableGroups for all installed packages.
     """
-    norm_name = operator.attrgetter('_normalized_name')
-    unique = functools.partial(unique_everseen, key=norm_name)
     eps = itertools.chain.from_iterable(
-        dist.entry_points for dist in unique(distributions())
+        dist.entry_points for dist in _unique(distributions())
     )
     return SelectableGroups.load(eps).select(**params)
 
diff --git a/package/requirements-package.txt b/package/requirements-package.txt
index 461765ac..997ebbfe 100644
--- a/package/requirements-package.txt
+++ b/package/requirements-package.txt
@@ -1,5 +1,5 @@
 apscheduler==3.9.1
-importlib-metadata==4.11.3
+importlib-metadata==4.11.4
 importlib-resources==5.7.1
 pyinstaller==5.1
 pyopenssl==22.0.0
diff --git a/requirements.txt b/requirements.txt
index 99364024..7031b33e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ gntp==1.0.3
 html5lib==1.1
 httpagentparser==1.9.2
 idna==3.3
-importlib-metadata==4.11.3
+importlib-metadata==4.11.4
 importlib-resources==5.7.1
 git+https://github.com/Tautulli/ipwhois.git@master#egg=ipwhois
 IPy==1.01