diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8467220..2f8488c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -23,6 +23,6 @@ requests-toolbelt==0.8.0
 six==1.10.0
 tqdm==4.15.0
 twine==1.13.0
-urllib3==1.25.8
+urllib3==1.26.5
 webencodings==0.5.1
 wrapt==1.10.11