diff --git a/MANIFEST.in b/MANIFEST.in
index 63e342183..0cf68650a 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-include AUTHORS CHANGES LICENSE README.rst BADGES.rst version.txt
+include AUTHORS CHANGES LICENSE README.rst BADGES.rst version.txt readthedocs.yml
 recursive-include pint *
 recursive-include docs *
 recursive-include bench *