diff --git a/setup.cfg b/setup.cfg
index 04bba8a..db159d2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,6 +28,7 @@ package_dir =
        = code
 py_modules =
     png
+    pngsuite
 scripts =
     code/prichunkpng
     code/pricolpng