diff --git a/requirements.txt b/requirements.txt
index c2ef66c..530c7f5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,4 +15,4 @@ pyflakes==1.5.0
 pytest==3.1.3
 pytz==2017.2
 requests==2.18.1
-urllib3==1.21.1
+urllib3==1.26.5