diff --git a/setup.py b/setup.py
index 91d6896..439da1c 100644
--- a/setup.py
+++ b/setup.py
@@ -44,4 +44,7 @@
     	'Programming Language :: Python :: 3.5',
     	'Topic :: Scientific/Engineering :: Information Analysis',
     ],
+    install_requires=[
+        'numpy',
+    ],
 )