diff --git a/freetds.spec b/freetds.spec
index acdc979..1b22095 100644
--- a/freetds.spec
+++ b/freetds.spec
@@ -40,6 +40,7 @@ to install %{name}-devel.
 %package doc
 Summary: Development documentation for %{name}
 Group: Documentation
+Obsoletes: %{name}-devel < 0.64-8
 
 %description doc
 This package contains the development documentation for %{name}.