diff --git a/requirements.txt b/requirements.txt
index 32e55a2..df5ecf2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 python_dateutil==2.5.3
 setuptools==65.3.0
-urllib3==1.25.3
+urllib3==1.26.19
diff --git a/setup.py b/setup.py
index 6caf67a..1e22b73 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@
 # http://pypi.python.org/pypi/setuptools
 
 REQUIRES = [
-    'urllib3~=1.25.3',
+    'urllib3>=1.25.3,<1.27.0',
     'python-dateutil~=2.5.3',
 ]