diff --git a/MANIFEST.in b/MANIFEST.in
index cb5ee07..06f1e02 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -5,4 +5,5 @@
 prune src/postorius/doc/_build
 graft src/postorius/static
 include src/postorius/doc/Makefile
+include dev-requirements.txt tox.ini
 recursive-include testing *.py *.cfg