diff --git a/requirements.txt b/requirements.txt
index a2a3a1a..9967f09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ requests==2.21.0
 rlp==1.1.0
 six==1.12.0
 toolz==0.9.0
-urllib3==1.24.1
+urllib3==1.26.5
 vine==1.2.0
 web3==4.8.2
 websockets==6.0