diff --git a/requirements.txt b/requirements.txt
index 17bb0d7..d06bb09 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,6 +13,7 @@
 pep8-naming>=0.3.3
 pyflakes>=1.0.0
 pylint>=1.5.2
+pypcap>=1.1.5
 pyOpenSSL>=0.13
 PyYAML>=3.10
 requests