diff --git a/.github/workflows/selfhosted_runner.yml b/.github/workflows/selfhosted_runner.yml
index 1ce832d4b7..ad0e9f4ceb 100644
--- a/.github/workflows/selfhosted_runner.yml
+++ b/.github/workflows/selfhosted_runner.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.9.13', '3.10', '3.11', '3.12']
+        python-version: ['3.9.13', '3.10', '3.11', '3.12', '3.13']
         architecture: ['x64']
 
     steps:
diff --git a/arcade/examples/pymunk_demo_top_down.py b/arcade/examples/pymunk_demo_top_down.py
index e7c33c152d..65b73c795c 100644
--- a/arcade/examples/pymunk_demo_top_down.py
+++ b/arcade/examples/pymunk_demo_top_down.py
@@ -203,7 +203,7 @@ def wall_hit_handler(sprite_a, sprite_b, arbiter, space, data):
     def on_mouse_press(self, x, y, button, modifiers):
         """ Called whenever the mouse button is clicked. """
 
-        bullet = arcade.SpriteSolidColor(5, 5, arcade.color.RED)
+        bullet = arcade.SpriteSolidColor(width=5, height=5, color=arcade.color.RED)
         self.bullet_list.append(bullet)
 
         # Position the bullet at the player's current location
diff --git a/pyproject.toml b/pyproject.toml
index f82b0103fa..031b94077c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,6 +15,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
@@ -25,7 +26,7 @@ dependencies = [
     # Expected future dev preview release on PyPI (not yet released)
     'pyglet==2.1.dev7',
     "pillow~=10.4.0",
-    "pymunk~=6.8.1",
+    "pymunk~=6.9.0",
     "pytiled-parser~=2.2.5",
 ]
 dynamic = ["version"]