diff --git a/setup.py b/setup.py
index 4db23b4..e2948cd 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,8 @@
       ],
       packages=find_packages(exclude=[]),
       package_data={'gridData': ['tests/datafiles/*.dx', 'tests/datafiles/*.dx.gz',
-                                 'tests/datafiles/*.ccp4', 'tests/datafiles/*.plt']},
+                                 'tests/datafiles/*.ccp4', 'tests/datafiles/*.plt',
+                                 'tests/datafiles/*.bz2']},
       install_requires=['numpy>=1.0.3', 'six', 'scipy', 'mrcfile'],
       tests_require=['pytest', 'numpy'],
       zip_safe=True,