diff --git a/MANIFEST.in b/MANIFEST.in
index df46685ecd..0dbcb3a227 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -7,9 +7,9 @@ include LICENSE.txt
 
 recursive-exclude * __pycache__
 recursive-exclude * *.py[co]
-recursive-include act/plotting *.txt
-recursive-include act/tests *
 
+recursive-include act/plotting *.txt
+recursive-include tests *.py *.png
 recursive-include docs *.rst conf.py Makefile make.bat
 
 include versioneer.py