diff --git a/setup.py b/setup.py
index 4fd238a..880300d 100644
--- a/setup.py
+++ b/setup.py
@@ -4,6 +4,7 @@
 
 setup(
     name='python_actr',
+    python_requires='>=3.0,<3.11',
     packages=['python_actr', 'python_actr.display', 'python_actr.actr', 'python_actr.ui'],
     version=python_actr.version.version,
     author='Carleton Cognitive Modelling Lab',