diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -23,5 +23,8 @@ setup(
         'Programming Language :: Python :: 3',
         'Topic :: Software Development :: Localization',
     ],
-    long_description=readme
+    long_description=readme,
+    install_requires=[
+        'numpy',
+    ],
 )
setup.py - add install_requires

`numpy` is a hard requirement and thus should be listed