diff --git a/MANIFEST.in b/MANIFEST.in
index 6e2d50b..92bdfc6 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,3 +3,4 @@ recursive-include src *
 recursive-include spintrum/examples *
 include CMakeLists.txt
 include get_version.py
+include LICENSE.txt