diff --git a/requirements/core.txt b/requirements/core.txt
index d2540da9f1..a078710396 100644
--- a/requirements/core.txt
+++ b/requirements/core.txt
@@ -7,6 +7,7 @@ cartopy
 matplotlib<1.9
 netcdf4
 numpy
+scipy
 # pyke (not pip installable)  #conda: pyke
 cf_units
 dask>=0.15.0
diff --git a/setup.py b/setup.py
index 2b7787effc..347edef3b7 100644
--- a/setup.py
+++ b/setup.py
@@ -245,7 +245,7 @@ def extract_version():
     zip_safe=False,
 
     setup_requires=pip_requirements('setup'),
-    install_requires=pip_requirements('core'),
+    install_requires=pip_requirements('setup') + pip_requirements('core'),
     tests_require=['{}[test]'.format(pypi_name)],
     extras_require = {
                       'test': pip_requirements('test'),