diff --git a/setup.py b/setup.py
index a22220c..0e1616c 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
     package_dir={},
     packages=find_packages(exclude=['dist', 'examples']),
     install_requires=[
-        "urllib3 >= 1.15",
+        "urllib3>=1.15,<2.6.0",
         "six >= 1.10",
         "certifi",
         "python-dateutil",