diff --git a/src/Exports.jl b/src/Exports.jl
index b5cc301..a686c4d 100644
--- a/src/Exports.jl
+++ b/src/Exports.jl
@@ -22,6 +22,7 @@ export omega
 export order
 export parameter
 export parameters
+export parent
 export scalar_product
 export set_congruence
 export specialize