diff --git a/dev-requirements.txt b/dev-requirements.txt
index 7e82164..adad27c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -17,5 +17,5 @@ six==1.12.0
 soupsieve==1.9.1
 tqdm==4.32.1
 twine==1.13.0
-urllib3==1.25.3
+urllib3==1.26.5
 webencodings==0.5.1