diff --git a/setup.py b/setup.py
index 4553a60..f6ed1ab 100644
--- a/setup.py
+++ b/setup.py
@@ -46,6 +46,7 @@ def get_version(rel_file='plugin.yaml'):
     install_requires=[
         "cloudify-common>=4.5.5",
         "pyyaml>=4.2b1",
+        "networkx==1.9.1",
         "requests>=2.7.0,<3.0",
         "cloudify-utilities-plugins-sdk>=0.0.31",  # Shared Resource Downloader
     ],