diff --git a/src/mincostflow.rs b/src/mincostflow.rs
index d8e2c71..60734ad 100644
--- a/src/mincostflow.rs
+++ b/src/mincostflow.rs
@@ -1,5 +1,6 @@
 use crate::internal_type_traits::Integral;
 
+#[derive(Clone, Debug)]
 pub struct MinCostFlowEdge<T> {
     pub from: usize,
     pub to: usize,