diff --git a/MANIFEST.in b/MANIFEST.in
index 2f1fcab..eb20fc6 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -7,7 +7,7 @@ include version.py
 include VERSION
 recursive-include docs *
 recursive-include examples *
-recursive-include dts_test_project
+recursive-include dts_test_project *
 
 # exclude all bytecode
 global-exclude *.pyo