diff --git a/roaring/src/bitmap/container.rs b/roaring/src/bitmap/container.rs
index 3ab1e5ad..4017eaab 100644
--- a/roaring/src/bitmap/container.rs
+++ b/roaring/src/bitmap/container.rs
@@ -17,6 +17,7 @@ pub struct Container {
     pub store: Store,
 }
 
+#[derive(Clone)]
 pub struct Iter<'a> {
     pub key: u16,
     inner: store::Iter<'a>,
@@ -41,6 +42,7 @@ impl Container {
         self.store.is_empty()
     }
 
+    #[inline]
     pub fn insert(&mut self, index: u16) -> bool {
         if self.store.insert(index) {
             self.ensure_correct_store();
diff --git a/roaring/src/bitmap/inherent.rs b/roaring/src/bitmap/inherent.rs
index 559b7579..b2919b4c 100644
--- a/roaring/src/bitmap/inherent.rs
+++ b/roaring/src/bitmap/inherent.rs
@@ -48,6 +48,7 @@ impl RoaringBitmap {
     /// assert_eq!(rb.insert(3), false);
     /// assert_eq!(rb.contains(3), true);
     /// ```
+    #[inline]
     pub fn insert(&mut self, value: u32) -> bool {
         let (key, index) = util::split(value);
         let container = match self.containers.binary_search_by_key(&key, |c| c.key) {
diff --git a/roaring/src/bitmap/iter.rs b/roaring/src/bitmap/iter.rs
index 59463a21..f37e5482 100644
--- a/roaring/src/bitmap/iter.rs
+++ b/roaring/src/bitmap/iter.rs
@@ -9,12 +9,14 @@ use crate::{NonSortedIntegers, RoaringBitmap};
 use alloc::vec::Vec;
 
 /// An iterator for `RoaringBitmap`.
+#[derive(Clone)]
 pub struct Iter<'a> {
     inner: iter::Flatten<slice::Iter<'a, Container>>,
     size_hint: u64,
 }
 
 /// An iterator for `RoaringBitmap`.
+#[derive(Clone)]
 pub struct IntoIter {
     inner: iter::Flatten<vec::IntoIter<Container>>,
     size_hint: u64,
diff --git a/roaring/src/bitmap/store/array_store/mod.rs b/roaring/src/bitmap/store/array_store/mod.rs
index 883db31f..e252caba 100644
--- a/roaring/src/bitmap/store/array_store/mod.rs
+++ b/roaring/src/bitmap/store/array_store/mod.rs
@@ -47,6 +47,7 @@ impl ArrayStore {
         }
     }
 
+    #[inline]
     pub fn insert(&mut self, index: u16) -> bool {
         self.vec.binary_search(&index).map_err(|loc| self.vec.insert(loc, index)).is_err()
     }
diff --git a/roaring/src/bitmap/store/bitmap_store.rs b/roaring/src/bitmap/store/bitmap_store.rs
index f349a2aa..7a181e3f 100644
--- a/roaring/src/bitmap/store/bitmap_store.rs
+++ b/roaring/src/bitmap/store/bitmap_store.rs
@@ -52,6 +52,7 @@ impl BitmapStore {
         }
     }
 
+    #[inline]
     pub fn insert(&mut self, index: u16) -> bool {
         let (key, bit) = (key(index), bit(index));
         let old_w = self.bits[key];
@@ -403,6 +404,7 @@ impl Display for Error {
 #[cfg(feature = "std")]
 impl std::error::Error for Error {}
 
+#[derive(Clone)]
 pub struct BitmapIter<B: Borrow<[u64; BITMAP_LENGTH]>> {
     key: usize,
     value: u64,
diff --git a/roaring/src/bitmap/store/mod.rs b/roaring/src/bitmap/store/mod.rs
index bb0d5822..bc46c532 100644
--- a/roaring/src/bitmap/store/mod.rs
+++ b/roaring/src/bitmap/store/mod.rs
@@ -25,6 +25,7 @@ pub enum Store {
     Bitmap(BitmapStore),
 }
 
+#[derive(Clone)]
 pub enum Iter<'a> {
     Array(slice::Iter<'a, u16>),
     Vec(vec::IntoIter<u16>),
@@ -49,6 +50,7 @@ impl Store {
         Store::Bitmap(BitmapStore::full())
     }
 
+    #[inline]
     pub fn insert(&mut self, index: u16) -> bool {
         match self {
             Array(vec) => vec.insert(index),