diff --git a/requirements.txt b/requirements.txt
index 5d836d5..c63c137 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,4 @@ snowballstemmer==1.2.1
 Sphinx==1.6.3
 sphinx-rtd-theme==0.2.4
 sphinxcontrib-websupport==1.0.1
-urllib3==1.21.1
+urllib3==1.24.2