diff --git a/dev_requirements.txt b/dev_requirements.txt
index c596f26..dee5606 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -52,7 +52,7 @@ terminado==0.8.1
 testpath==0.4.2
 tornado==5.1.1
 traitlets==4.3.2
-urllib3==1.24.2
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2
diff --git a/requirements.txt b/requirements.txt
index 62f3aba..d062146 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@ psycopg2-binary==2.7.5
 python-dateutil==2.7.5
 s3transfer==0.1.13
 six==1.11.0
-urllib3==1.24.2
+urllib3==1.26.5