diff --git a/setup.py b/setup.py
index 0b90ad5a..a6465730 100644
--- a/setup.py
+++ b/setup.py
@@ -115,5 +115,6 @@ def run(self):
           'Operating System :: Unix',
           'Operating System :: MacOS'],
       packages=['pymaster'],
+      install_requires=['scipy', 'numpy', 'healpy'],
       ext_modules=[_nmtlib],
       )