diff --git a/install.py b/install.py
index 77f33e9..5ca97d1 100644
--- a/install.py
+++ b/install.py
@@ -43,7 +43,8 @@ def install():
         'scipy',
         'scikit-learn',
         'scikit-fuzzy',
-        'libpysal'
+        'libpysal',
+        'spopt'
         ]
 
     if minor == 4: