diff --git a/requirements.txt b/requirements.txt
index 1326562..7c6cc59 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,6 +21,6 @@ rlp==1.1.0
 semantic-version==2.6.0
 six==1.12.0
 toolz==0.9.0
-urllib3==1.24.1
+urllib3==1.26.5
 web3==4.9.1
 websockets==6.0