diff --git a/requirements.txt b/requirements.txt
index 018ae76..5433ed5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ psycopg2==2.7.4
 psycopg2-binary==2.7.4
 pytz==2018.3
 typing==3.6.4
-urllib3==1.23
+urllib3==1.26.5
 requests==2.19.1
 redis==3.2.1
 sam-alignment-reconstructor==0.0.5