diff --git a/accelerate/MANIFEST.in b/accelerate/MANIFEST.in
index 13cce5ff..3093dce5 100644
--- a/accelerate/MANIFEST.in
+++ b/accelerate/MANIFEST.in
@@ -1,3 +1,4 @@
 include src/*.pyx
 include src/*.c
+include OpenGL_accelerate/*.pxd
 include license.txt