diff --git a/MANIFEST.in b/MANIFEST.in
index 6ebc17c7818efef1d1d828b0def01bd89779263e..3f4cc5699cf7440351651f0b08cfc7e6ed11b071 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,4 @@
 include README.rst
 include LICENSE.md
+include requirements.txt
 recursive-include test *.py *.prior