diff --git a/requirements-dev.txt b/requirements-dev.txt
index 847f09a..134cd39 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -17,5 +17,5 @@ requests-toolbelt==0.8.0
 six==1.12.0
 tqdm==4.28.1
 twine==1.12.1
-urllib3==1.24.1
+urllib3==1.26.5
 webencodings==0.5.1