diff --git a/setup.py b/setup.py
index 37499f9..6fb7cfa 100644
--- a/setup.py
+++ b/setup.py
@@ -50,7 +50,7 @@
     author_email='pycroscopy@gmail.com',
     install_requires=requirements,
     setup_requires=['pytest-runner'],
-    tests_require=['pytest', 'pywget', 'hyperspy'],
+    tests_require=['pytest', 'pywget', 'hyperspy', 'sid'],
     platforms=['Linux', 'Mac OSX', 'Windows 10/8.1/8/7'],
     # package_data={'sample':['dataset_1.dat']}
     test_suite='pytest',