diff --git a/requirements.txt b/requirements.txt
index 8a68414..cffc5bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ requests==2.24.0
 rlp==1.2.0
 six==1.15.0
 toolz==0.10.0
-urllib3==1.25.9
+urllib3==1.26.5
 varint==1.0.2
 visitor==0.1.3
 web3==5.12.0