diff --git a/MANIFEST.in b/MANIFEST.in
index 8b3eefe..4d7b840 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,4 +2,5 @@ recursive-include tile_generator/templates *
 include LICENSE
 include NOTICE
 include README.md
+include requirements.txt
 include version.txt