diff --git a/lib/importlib_resources/_compat.py b/lib/importlib_resources/_compat.py
index 61e48d47..8d7ade08 100644
--- a/lib/importlib_resources/_compat.py
+++ b/lib/importlib_resources/_compat.py
@@ -1,9 +1,12 @@
 # flake8: noqa
 
 import abc
+import os
 import sys
 import pathlib
 from contextlib import suppress
+from typing import Union
+
 
 if sys.version_info >= (3, 10):
     from zipfile import Path as ZipPath  # type: ignore
@@ -96,3 +99,10 @@ def wrap_spec(package):
     from . import _adapters
 
     return _adapters.SpecLoaderAdapter(package.__spec__, TraversableResourcesLoader)
+
+
+if sys.version_info >= (3, 9):
+    StrPath = Union[str, os.PathLike[str]]
+else:
+    # PathLike is only subscriptable at runtime in 3.9+
+    StrPath = Union[str, "os.PathLike[str]"]
diff --git a/lib/importlib_resources/abc.py b/lib/importlib_resources/abc.py
index d39dc1ad..a2b0af62 100644
--- a/lib/importlib_resources/abc.py
+++ b/lib/importlib_resources/abc.py
@@ -1,7 +1,11 @@
 import abc
-from typing import BinaryIO, Iterable, Text
+import io
+from typing import Any, BinaryIO, Iterable, Iterator, NoReturn, Text, Optional
 
-from ._compat import runtime_checkable, Protocol
+from ._compat import runtime_checkable, Protocol, StrPath
+
+
+__all__ = ["ResourceReader", "Traversable", "TraversableResources"]
 
 
 class ResourceReader(metaclass=abc.ABCMeta):
@@ -54,19 +58,19 @@ class Traversable(Protocol):
     """
 
     @abc.abstractmethod
-    def iterdir(self):
+    def iterdir(self) -> Iterator["Traversable"]:
         """
         Yield Traversable objects in self
         """
 
-    def read_bytes(self):
+    def read_bytes(self) -> bytes:
         """
         Read contents of self as bytes
         """
         with self.open('rb') as strm:
             return strm.read()
 
-    def read_text(self, encoding=None):
+    def read_text(self, encoding: Optional[str] = None) -> str:
         """
         Read contents of self as text
         """
@@ -86,12 +90,12 @@ class Traversable(Protocol):
         """
 
     @abc.abstractmethod
-    def joinpath(self, child):
+    def joinpath(self, child: StrPath) -> "Traversable":
         """
         Return Traversable child in self
         """
 
-    def __truediv__(self, child):
+    def __truediv__(self, child: StrPath) -> "Traversable":
         """
         Return Traversable child in self
         """
@@ -121,17 +125,17 @@ class TraversableResources(ResourceReader):
     """
 
     @abc.abstractmethod
-    def files(self):
+    def files(self) -> "Traversable":
         """Return a Traversable object for the loaded package."""
 
-    def open_resource(self, resource):
+    def open_resource(self, resource: StrPath) -> io.BufferedReader:
         return self.files().joinpath(resource).open('rb')
 
-    def resource_path(self, resource):
+    def resource_path(self, resource: Any) -> NoReturn:
         raise FileNotFoundError(resource)
 
-    def is_resource(self, path):
+    def is_resource(self, path: StrPath) -> bool:
         return self.files().joinpath(path).is_file()
 
-    def contents(self):
+    def contents(self) -> Iterator[str]:
         return (item.name for item in self.files().iterdir())
diff --git a/lib/importlib_resources/tests/update-zips.py b/lib/importlib_resources/tests/update-zips.py
index 9ef0224c..231334aa 100644
--- a/lib/importlib_resources/tests/update-zips.py
+++ b/lib/importlib_resources/tests/update-zips.py
@@ -42,7 +42,7 @@ def generate(suffix):
 
 def walk(datapath):
     for dirpath, dirnames, filenames in os.walk(datapath):
-        with contextlib.suppress(KeyError):
+        with contextlib.suppress(ValueError):
             dirnames.remove('__pycache__')
         for filename in filenames:
             res = pathlib.Path(dirpath) / filename
diff --git a/package/requirements-package.txt b/package/requirements-package.txt
index 0a291e78..c7d7245e 100644
--- a/package/requirements-package.txt
+++ b/package/requirements-package.txt
@@ -1,5 +1,5 @@
 apscheduler==3.8.0
-importlib-resources==5.4.0
+importlib-resources==5.6.0
 pyinstaller==4.9
 pyopenssl==22.0.0
 pycryptodomex==3.14.1
diff --git a/requirements.txt b/requirements.txt
index 9c3cc11a..c4fe538f 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-resources==5.4.0
+importlib-resources==5.6.0
 git+https://github.com/Tautulli/ipwhois.git@master#egg=ipwhois
 IPy==1.01
 Mako==1.1.6