diff --git a/requirements.txt b/requirements.txt
index 214afd2..e5b47f4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,4 +19,4 @@ snowballstemmer==1.2.1
 Sphinx==1.8.0
 sphinx-rtd-theme==0.4.1
 sphinxcontrib-websupport==1.1.0
-urllib3==1.23
+urllib3==1.26.5