diff --git a/MANIFEST.in b/MANIFEST.in
index 6abbcea5a..96a6f4a4e 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,6 +3,7 @@ include AUTHORS
 include INSTALL
 include LICENSE
 include MANIFEST.in
+include scrapy/core/downloader/responsetypes/mime.types
 recursive-include scrapy/templates *
 recursive-include scrapy/tests/sample_data *
 recursive-include docs *