diff --git a/requirements.txt b/requirements.txt
index 9a54bee..0cfb31e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,11 @@
 netaddr
 netifaces
 scapy==2.4.3rc1
-requests
+requests>=2.21
 PrettyTable
-urllib3
+urllib3<1.25,>=1.21.1
 ruamel.yaml
 requests_mock
 future
+pathlib2
+