diff --git a/docs/requirements.txt b/docs/requirements.txt
index f6133ea..d765b83 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -53,7 +53,7 @@ sphinxcontrib-serializinghtml==1.1.4
 testpath==0.4.4
 tornado==6.3.2
 traitlets==4.3.3
-urllib3==1.26.5
+urllib3==1.26.17
 webencodings==0.5.1
 zipp==3.4.0
 exhale==0.2.3