diff --git a/requirements.txt b/requirements.txt
index b3f232f..6162844 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,6 +22,6 @@ rlp==0.6.0
 semantic-version==2.6.0
 six==1.11.0
 toolz==0.9.0
-urllib3==1.22
+urllib3==1.26.5
 web3==4.1.0
 websockets==4.0.1