diff --git a/rust-generic-array.spec b/rust-generic-array.spec
index be33e05..26d6869 100644
--- a/rust-generic-array.spec
+++ b/rust-generic-array.spec
@@ -37,7 +37,7 @@ which use "%{crate}" crate.
 
 %files          devel
 %license LICENSE
-%doc README.md CHANGELOG.md
+%doc README.md CHANGELOG.md DESIGN.md
 %{cargo_registry}/%{crate}-%{version_no_tilde}/
 
 %package     -n %{name}+default-devel