diff --git a/setup.py b/setup.py
index 5107d10..69322f9 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ def get_version():
     packages=setuptools.find_packages(),
     python_requires=">=3.7",
     install_requires=[
-        "pettingzoo @ git+https://github.com/Farama-Foundation/PettingZoo",
+        "pettingzoo>=1.21.0",
         "tinyscaler>=1.0.4",
         "gym>=0.26.0",
         "pygame==2.1.2",