diff --git a/requirements.txt b/requirements.txt
index a029912..4630dcc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ sphinxcontrib-htmlhelp==1.0.2
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.3
-urllib3==1.25.5
+urllib3==1.26.5
 wcwidth==0.1.7
 Werkzeug==0.16.0
 zipp==0.6.0