diff --git a/requirements-dev.txt b/requirements-dev.txt
index edae7ee..c397e90 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -48,5 +48,5 @@ Sphinx==1.8.4
 sphinxcontrib-websupport==1.1.0
 toposort==1.5
 tornado==5.1.1
-urllib3==1.24.2
+urllib3==1.26.5
 zipfile36==0.1.3
diff --git a/requirements.txt b/requirements.txt
index 848ae8d..f8fdde9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,5 +26,5 @@ scipy==1.2.0
 six==1.12.0
 toposort==1.5
 tornado==5.1.1
-urllib3==1.24.2
+urllib3==1.26.5
 zipfile36==0.1.3