diff --git a/dev-requirements.txt b/dev-requirements.txt
index e277ad50..24266da4 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -100,7 +100,7 @@ typing-extensions==4.1.1
     #   mypy
     #   mypy-boto3-cloudformation
     #   pylint
-urllib3==1.26.17
+urllib3==1.26.18
     # via
     #   -r requirements.txt
     #   botocore
diff --git a/requirements.txt b/requirements.txt
index 267d3598..41a99dab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,5 +20,5 @@ s3transfer==0.7.0
     # via boto3
 six==1.15.0
     # via python-dateutil
-urllib3==1.26.17
+urllib3==1.26.18
     # via botocore