diff --git a/run_tests.py b/run_tests.py
index 9ea035182..03bd68fb6 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -5,18 +5,21 @@ import unittest
 import bson
 import objectid
 import dbref
+import son
 import mongo
 
 def main():
     bson_suite = unittest.TestLoader().loadTestsFromModule(bson)
     objectid_suite = unittest.TestLoader().loadTestsFromModule(objectid)
     dbref_suite = unittest.TestLoader().loadTestsFromModule(dbref)
+    son_suite = unittest.TestLoader().loadTestsFromModule(son)
     mongo_suite = unittest.TestLoader().loadTestsFromModule(mongo)
     alltests = unittest.TestSuite([bson_suite, objectid_suite, dbref_suite])
 
     unittest.TextTestRunner().run(objectid_suite)
     unittest.TextTestRunner().run(dbref_suite)
     unittest.TextTestRunner().run(bson_suite)
+    unittest.TextTestRunner().run(son_suite)
     unittest.TextTestRunner().run(mongo_suite)
 
 if __name__ == "__main__":