diff --git a/serverless-sms-service/requirements-dev.txt b/serverless-sms-service/requirements-dev.txt
index ef2826c..1faccaf 100644
--- a/serverless-sms-service/requirements-dev.txt
+++ b/serverless-sms-service/requirements-dev.txt
@@ -8,4 +8,4 @@ jmespath==0.9.3
 python-dateutil==2.7.3
 six==1.11.0
 typing==3.6.4
-urllib3==1.24
+urllib3==1.26.5