diff --git a/MANIFEST.in b/MANIFEST.in
index 501d3b3c..5e91a36d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -21,5 +21,7 @@ include README_SETUP.txt
 include README.rst
 include LICENSE
 
+recursive-include pycuda *.pyx
+
 recursive-include bpl-subset/bpl_subset/boost *.h *.hpp *.cpp *.html *.inl *.ipp *.pl *.txt
 recursive-include bpl-subset/bpl_subset/libs *.h *.hpp *.cpp *.html *.inl *.ipp *.pl *.txt