diff --git a/roaring/src/bitmap/iter.rs b/roaring/src/bitmap/iter.rs
index f7fe68e6..f37e5482 100644
--- a/roaring/src/bitmap/iter.rs
+++ b/roaring/src/bitmap/iter.rs
@@ -16,6 +16,7 @@ pub struct Iter<'a> {
 }
 
 /// An iterator for `RoaringBitmap`.
+#[derive(Clone)]
 pub struct IntoIter {
     inner: iter::Flatten<vec::IntoIter<Container>>,
     size_hint: u64,