diff --git a/setup.py b/setup.py
index 6e8b6d10..5907e0d4 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@
 PostHog is developer-friendly, self-hosted product analytics. posthog-python is the python package.
 """
 
-install_requires = ["requests>=2.7,<3.0", "six>=1.5", "monotonic>=1.5", "backoff>=1.10.0,<2.0.0", "python-dateutil>2.1"]
+install_requires = ["requests>=2.7,<3.0", "six>=1.5", "monotonic>=1.5", "backoff>=1.10.0,<3.0.0", "python-dateutil>2.1"]
 
 extras_require = {
     "dev": [