diff --git a/requirements.txt b/requirements.txt
index c8674b86..ff39cf04 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@ certifi
 inflection==0.3.0
 pytz==2016.7
 requests==2.20.0
-urllib3==1.10.2
+urllib3==1.26.5
 six==1.9.0
diff --git a/rtd-requirements.txt b/rtd-requirements.txt
index d2da770c..40ab7d83 100644
--- a/rtd-requirements.txt
+++ b/rtd-requirements.txt
@@ -1,6 +1,6 @@
 certifi
 inflection==0.3.0
 requests==2.20.0
-urllib3==1.10.2
+urllib3==1.26.5
 six==1.9.0
 sphinx-rtd-theme==0.1.7
\ No newline at end of file