diff --git a/Cargo.toml b/Cargo.toml
index 51eea51d..ca6b77df 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -71,6 +71,7 @@ negative_feature_names = "warn"
 path_buf_push_overwrite = "warn"
 ptr_as_ptr = "warn"
 rc_mutex = "warn"
+redundant_clone = "warn"
 redundant_feature_names = "warn"
 ref_option_ref = "warn"
 rest_pat_in_fully_bound_structs = "warn"
diff --git a/crates/toml/tests/serde/general.rs b/crates/toml/tests/serde/general.rs
index 48a28e10..899eeb06 100644
--- a/crates/toml/tests/serde/general.rs
+++ b/crates/toml/tests/serde/general.rs
@@ -1221,7 +1221,7 @@ Foo {
     );
     println!("Value::try_from(literal)");
     assert_data_eq!(
-        toml::Value::try_from(literal.clone())
+        toml::Value::try_from(literal)
             .unwrap_err()
             .to_string(),
         str!["u64 value was too large"].raw()
@@ -1284,7 +1284,7 @@ Foo {
     );
     println!("Value::try_from(literal)");
     assert_data_eq!(
-        toml::Value::try_from(literal.clone())
+        toml::Value::try_from(literal)
             .unwrap_err()
             .to_string(),
         str!["i128 is not supported"].raw()
@@ -1347,7 +1347,7 @@ Foo {
     );
     println!("Value::try_from(literal)");
     assert_data_eq!(
-        toml::Value::try_from(literal.clone())
+        toml::Value::try_from(literal)
             .unwrap_err()
             .to_string(),
         str!["i128 is not supported"].raw()
@@ -1410,7 +1410,7 @@ Foo {
     );
     println!("Value::try_from(literal)");
     assert_data_eq!(
-        toml::Value::try_from(literal.clone())
+        toml::Value::try_from(literal)
             .unwrap_err()
             .to_string(),
         str!["u128 is not supported"].raw()
diff --git a/crates/toml_edit/src/inline_table.rs b/crates/toml_edit/src/inline_table.rs
index 10e7ffef..36782664 100644
--- a/crates/toml_edit/src/inline_table.rs
+++ b/crates/toml_edit/src/inline_table.rs
@@ -397,7 +397,7 @@ impl InlineTable {
         use indexmap::map::MutableEntryKey;
         let key = Key::new(key);
         let value = Item::Value(value);
-        match self.items.entry(key.clone()) {
+        match self.items.entry(key) {
             indexmap::map::Entry::Occupied(mut entry) => {
                 entry.key_mut().fmt();
                 let old = std::mem::replace(entry.get_mut(), value);
diff --git a/crates/toml_edit/src/table.rs b/crates/toml_edit/src/table.rs
index 85dac1be..13568fc4 100644
--- a/crates/toml_edit/src/table.rs
+++ b/crates/toml_edit/src/table.rs
@@ -433,7 +433,7 @@ impl Table {
     pub fn insert(&mut self, key: &str, item: Item) -> Option<Item> {
         use indexmap::map::MutableEntryKey;
         let key = Key::new(key);
-        match self.items.entry(key.clone()) {
+        match self.items.entry(key) {
             indexmap::map::Entry::Occupied(mut entry) => {
                 entry.key_mut().fmt();
                 let old = std::mem::replace(entry.get_mut(), item);