diff --git a/MANIFEST.in b/MANIFEST.in
index b95e612..6fd4b14 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,7 +1,8 @@
+include requirements.txt
 prune tests
 prune tools
 prune docs
 prune .vscode
 prune .github
 global-exclude .travis.yml .gitignore .drone.yml .dockerignore .coveragerc
-global-exclude .codecov.yml requirements*txt tox.ini Makefile .azure-piplines.yml
+global-exclude .codecov.yml requirements-dev.txt tox.ini Makefile .azure-piplines.yml