diff --git a/requirements-dev.txt b/requirements-dev.txt
index 08510ed..dcfba78 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -38,7 +38,7 @@ sphinx==1.8.5
 sphinxcontrib-serializinghtml==1.1.4
 sphinxcontrib-websupport==1.2.4
 toml==0.10.2
-urllib3==1.26.2
+urllib3==1.26.3
 virtualenv==20.2.1
 wcwidth==0.2.5
 zipp==3.4.0