diff --git a/setup.py b/setup.py
index 89dd43e24..77bfe5d3c 100644
--- a/setup.py
+++ b/setup.py
@@ -52,7 +52,7 @@
 ]
 
 install_requires = [
-    "urllib3>=1.21.1, <2",
+    "urllib3>=1.21.1, <3",
     "certifi",
 ]
 tests_require = [