diff --git a/presign/requirements.txt b/presign/requirements.txt
index f37c234..ecda20e 100644
--- a/presign/requirements.txt
+++ b/presign/requirements.txt
@@ -5,4 +5,4 @@ jmespath==0.9.4
 python-dateutil==2.8.1
 s3transfer==0.2.1
 six==1.13.0
-urllib3==1.25.7
+urllib3==1.25.8