diff --git a/docs/requirements.txt b/docs/requirements.txt
index 287c3c0..a38c5d5 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -32,4 +32,4 @@ sphinx-rtd-theme==0.4.2
 sphinxcontrib-websupport==1.1.0
 toml==0.10.0
 tqdm==4.28.1
-urllib3==1.24.1
+urllib3==1.26.5
diff --git a/requirements.txt b/requirements.txt
index 467a174..15c5ba2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -89,7 +89,7 @@ textwrap3==0.9.1
 tornado==5.1.1
 tqdm==4.24.0
 traitlets==4.3.2
-urllib3==1.24.1
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 widgetsnbextension==3.4.2