diff --git a/docs/requirements.txt b/docs/requirements.txt
index 30c53b4..d0cd5a8 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -21,4 +21,4 @@ Sphinx==1.8.1
 sphinx-rtd-theme==0.4.1
 sphinxcontrib-websupport==1.1.0
 tqdm==4.26.0
-urllib3==1.23
+urllib3==1.24.2