diff --git a/README.md b/README.md
index 806720f..a47b730 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@
 
 # for images
 # not for pypy >= 3.10
-pillow >= 9.5.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
+pillow >= 10.0.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
 
 # for sys info
 psutil >= 5.9.5
diff --git a/docs/README-en.md b/docs/README-en.md
index 6550a0e..abac44f 100644
--- a/docs/README-en.md
+++ b/docs/README-en.md
@@ -78,7 +78,7 @@
 
 # for images
 # not for pypy >= 3.10
-pillow >= 9.5.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
+pillow >= 10.0.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
 
 # for sys info
 psutil >= 5.9.5
diff --git a/libs/pyglet/__init__.py b/libs/pyglet/__init__.py
index 82e8730..db48773 100644
--- a/libs/pyglet/__init__.py
+++ b/libs/pyglet/__init__.py
@@ -9,7 +9,7 @@ import sys
 from typing import TYPE_CHECKING
 
 #: The release version
-version = '2.0.8'
+version = '2.0.9'
 __version__ = version
 
 MIN_PYTHON_VERSION = 3, 8
diff --git a/libs/pyglet/image/atlas.py b/libs/pyglet/image/atlas.py
index 05bbddd..63e9e80 100644
--- a/libs/pyglet/image/atlas.py
+++ b/libs/pyglet/image/atlas.py
@@ -23,7 +23,7 @@ the application's responsibility to keep track of the regions returned by the
 
 .. versionadded:: 1.1
 """
-from typing import TYPE_CHECKING, Tuple
+from typing import TYPE_CHECKING, Tuple, Optional
 
 import pyglet
 
@@ -40,13 +40,13 @@ class AllocatorException(Exception):
 class _Strip:
     __slots__ = 'x', 'y', 'max_height', 'y2'
 
-    def __init__(self, y: int, max_height: int):
+    def __init__(self, y: int, max_height: int) -> None:
         self.x = 0
         self.y = y
         self.max_height = max_height
         self.y2 = y
 
-    def add(self, width: int, height: int):
+    def add(self, width: int, height: int) -> Tuple[int, int]:
         assert width > 0 and height > 0
         assert height <= self.max_height
 
@@ -55,7 +55,7 @@ class _Strip:
         self.y2 = max(self.y + height, self.y2)
         return x, y
 
-    def compact(self):
+    def compact(self) -> None:
         self.max_height = self.y2 - self.y
 
 
@@ -71,7 +71,7 @@ class Allocator:
     """
     __slots__ = 'width', 'height', 'strips', 'used_area'
 
-    def __init__(self, width: int, height: int):
+    def __init__(self, width: int, height: int) -> None:
         """Create an `Allocator` of the given size.
 
         :Parameters:
@@ -139,13 +139,13 @@ class Allocator:
         if not self.strips:
             return 0.0
         possible_area = self.strips[-1].y2 * self.width
-        return 1.0 - self.used_area / float(possible_area)
+        return 1.0 - self.used_area / possible_area
 
 
 class TextureAtlas:
     """Collection of images within a texture."""
 
-    def __init__(self, width: int = 2048, height: int = 2048):
+    def __init__(self, width: int=2048, height: int=2048) -> None:
         """Create a texture atlas of the given size.
 
         :Parameters:
@@ -194,7 +194,7 @@ class TextureBin:
     ones as necessary to accommodate images added to the bin.
     """
 
-    def __init__(self, texture_width: int = 2048, texture_height: int = 2048):
+    def __init__(self, texture_width: int = 2048, texture_height: int = 2048) -> None:
         """Create a texture bin for holding atlases of the given size.
 
         :Parameters:
@@ -252,7 +252,7 @@ class TextureArrayBin:
     ones as necessary as the depth is exceeded.
     """
 
-    def __init__(self, texture_width=2048, texture_height=2048, max_depth=None):
+    def __init__(self, texture_width: int=2048, texture_height: int=2048, max_depth: Optional[int]=None) -> None:
         max_texture_size = pyglet.image.get_max_texture_size()
         self.max_depth = max_depth or pyglet.image.get_max_array_texture_layers()
         self.texture_width = min(texture_width, max_texture_size)
diff --git a/requirement-build.txt b/requirement-build.txt
index 350ea5c..fe1ad10 100644
--- a/requirement-build.txt
+++ b/requirement-build.txt
@@ -4,7 +4,7 @@
 
 # for images
 # not for pypy >= 3.10
-pillow >= 9.5.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
+pillow >= 10.0.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
 
 # for sys info
 psutil >= 5.9.5
diff --git a/requirement-dev.txt b/requirement-dev.txt
index debcd87..47c8e5a 100644
--- a/requirement-dev.txt
+++ b/requirement-dev.txt
@@ -5,7 +5,7 @@
 
 # for images
 # not for pypy >= 3.10
-pillow >= 9.5.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
+pillow >= 10.0.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
 
 # for sys info
 psutil >= 5.9.5
diff --git a/requirement.txt b/requirement.txt
index c46e8b3..316f5a8 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -3,7 +3,7 @@
 
 # for images
 # not for pypy >= 3.10
-pillow >= 9.5.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
+pillow >= 10.0.0; (platform_python_implementation == "PyPy" and python_version < "3.10") or platform_python_implementation == "CPython"
 
 # for sys info
 psutil >= 5.9.5