diff --git a/et4_web3py_client/requirements.txt b/et4_web3py_client/requirements.txt
index 9186476..fd53f26 100644
--- a/et4_web3py_client/requirements.txt
+++ b/et4_web3py_client/requirements.txt
@@ -18,6 +18,6 @@ requests==2.20.0
 rlp==1.0.1
 six==1.11.0
 toolz==0.9.0
-urllib3==1.24.2
+urllib3==1.26.5
 web3==4.2.1
 websockets==5.0
\ No newline at end of file