diff --git a/requirements.txt b/requirements.txt
index 50cb325..cf4e331 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ tqdm==4.28.1
 traitlets==4.3.2
 typed-ast==1.1.0
 tzlocal==1.5.1
-urllib3==1.23
+urllib3==1.26.5
 wbdata==0.2.7
 wcwidth==0.1.7
 webencodings==0.5.1
diff --git a/setup.py b/setup.py
index 3be42a5..632ffbc 100644
--- a/setup.py
+++ b/setup.py
@@ -97,7 +97,7 @@
       "traitlets==4.3.2",
       "typed-ast==1.1.0",
       "tzlocal==1.5.1",
-      "urllib3==1.23",
+      "urllib3==1.26.5",
       "wbdata==0.2.7",
       "wcwidth==0.1.7",
       "webencodings==0.5.1",