diff --git a/requirements.txt b/requirements.txt
index 5a1eeec..eab2d0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ rlp==1.0.1
 SimpleWebSocketServerFork==0.1.3
 six==1.11.0
 toolz==0.9.0
-urllib3==1.22
+urllib3==1.26.5
 web3==4.2.1
 websocket-client==0.48.0
 websockets==5.0.1