diff --git a/tests/requirements.txt b/tests/requirements.txt
index 0fa34ef..65bfe0c 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -40,7 +40,7 @@ semantic-version==2.6.0
 six==1.11.0
 toolz==0.9.0
 trie==1.3.8
-urllib3==1.24.1
+urllib3==1.24.2
 vyper==0.1.0b7
 web3==4.8.1
 websockets==6.0