diff --git a/requirements.txt b/requirements.txt
index d41f4a8..135350a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,6 +38,6 @@ sphinxcontrib-htmlhelp==1.0.2
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.2
 sphinxcontrib-serializinghtml==1.1.3
-urllib3==1.25.3 ; python_version >= '3.4'
+urllib3==1.26.5 ; python_version >= '3.4'
 wcwidth==0.1.7
 zipp==0.6.0