diff --git a/requirements.txt b/requirements.txt
index ebe3758..7edf45d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ requests==2.22.0
 rlp==1.1.0
 six==1.12.0
 toolz==0.10.0
-urllib3==1.25.6
+urllib3==1.26.5
 varint==1.0.2
 web3==5.5.0
 websockets==8.1.0
diff --git a/setup.py b/setup.py
index d765a14..7a315ce 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@
             "rlp==1.1.0",
             "six==1.12.0",
             "toolz==0.10.0",
-            "urllib3==1.25.6",
+            "urllib3==1.26.5",
             "varint==1.0.2",
             "web3==5.5.0",
             "websockets==8.1.0",