diff --git a/requirements.dev.txt b/requirements.dev.txt
index da3486d..dc6ef39 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -39,6 +39,6 @@ six==1.10.0
 SQLAlchemy==1.2.11
 terminaltables==3.1.0
 traitlets==4.3.2
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
 zope.interface==4.5.0
diff --git a/requirements.txt b/requirements.txt
index da3486d..dc6ef39 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,6 +39,6 @@ six==1.10.0
 SQLAlchemy==1.2.11
 terminaltables==3.1.0
 traitlets==4.3.2
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
 zope.interface==4.5.0