diff --git a/python/setup.py b/python/setup.py
index 5103e91ede7..477bd439d7c 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -30,7 +30,7 @@
 else:
     from setuptools import setup
     from setuptools.extension import Extension
-    kwargs = {'install_requires': ['numpy>=1.17', 'requests>=2.20.0,<3', 'graphviz<0.9.0,>=0.8.1', 'contextvars;python_version<"3.7"'], 'zip_safe': False}
+    kwargs = {'install_requires': ['numpy>=1.17', 'requests>=2.20.0', 'graphviz>=0.8.1', 'contextvars;python_version<"3.7"'], 'zip_safe': False}
 
 with_cython = False
 if '--with-cython' in sys.argv: