diff --git a/pip_requirements.txt b/pip_requirements.txt
index 974826b..ab55a0f 100644
--- a/pip_requirements.txt
+++ b/pip_requirements.txt
@@ -26,7 +26,7 @@ requests==2.18.3
 rocket-errbot==1.2.5
 six==1.10.0
 slackclient==1.0.7
-urllib3==1.22
+urllib3==1.26.5
 waitress==1.0.2
 WebOb==1.7.3
 websocket-client==0.44.0