diff --git a/ObservationSim/MockObject/SpecDisperser/disperse_c/__init__.py b/ObservationSim/MockObject/SpecDisperser/disperse_c/__init__.py
index 8cd2688031ac6c1d1e4614aa67ff0ef0b9b19cdd..89127a04aa30fadbf54cf3817aa7158f1a6a8d55 100644
--- a/ObservationSim/MockObject/SpecDisperser/disperse_c/__init__.py
+++ b/ObservationSim/MockObject/SpecDisperser/disperse_c/__init__.py
@@ -4,7 +4,7 @@
 Cython
 """
 
-from . import disperse
-from . import interp
-#from .disperse import *
-#from .interp import *
+# from . import disperse
+# from . import interp
+from .disperse import *
+from .interp import *
diff --git a/setup.py b/setup.py
index e750979c8d4a970aa310e42b99d5b0102991c8fb..5162fa91a410aa42c8ea6c665e0547dceb9371a4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,30 @@
 from setuptools import setup, find_packages
 
+from setuptools.extension import Extension
+from setuptools.config import read_configuration
+
+from Cython.Build import cythonize
+
+import numpy
+
+extensions = [
+    Extension("ObservationSim.MockObject.SpecDisperser.disperse_c.interp", ["ObservationSim/MockObject/SpecDisperser/disperse_c/interp.pyx"],
+        include_dirs = [numpy.get_include()],
+        libraries=["m"]),
+    
+    Extension("ObservationSim.MockObject.SpecDisperser.disperse_c.disperse", ["ObservationSim/MockObject/SpecDisperser/disperse_c/disperse.pyx"],
+        include_dirs = [numpy.get_include()],
+        libraries=["m"]),
+]
+
+
+# setup(
+#     name = "slssim_disperse",
+#     ext_modules = cythonize(extensions),
+# )
+
+
+
 setup(name='CSSTSim', 
     version='0.3', 
     packages=find_packages(),
@@ -16,4 +41,5 @@ setup(name='CSSTSim',
     # 'Cython>=0.29.21'
     # 'numba>=0.50.1'
     # ]
+    ext_modules = cythonize(extensions),
 )
\ No newline at end of file