diff --git a/requirements.txt b/requirements.txt
index 8e02494..1d9ca93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -100,7 +100,7 @@ typing==3.6.2
 tzlocal==1.5.1
 unicodecsv==0.14.1
 Unidecode==0.4.21
-urllib3==1.21.1
+urllib3==1.26.5
 watchdog==0.9.0
 wcwidth==0.1.7
 webcolors==1.7
diff --git a/requirements_bicluster.txt b/requirements_bicluster.txt
index 559137f..1eb18fe 100644
--- a/requirements_bicluster.txt
+++ b/requirements_bicluster.txt
@@ -21,5 +21,5 @@ PyYAML==3.13
 requests==2.19.1
 six==1.11.0
 tzlocal==1.5.1
-urllib3==1.23
+urllib3==1.26.5
 Werkzeug==0.14.1