diff --git a/Cargo.toml b/Cargo.toml
index 0baf6e6..d7449f5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -51,7 +51,7 @@ required-features = ["rustls-tls"]
 
 [[example]]
 name = "data_types_derive_simple"
-required-features = ["time", "uuid"]
+required-features = ["time", "uuid", "chrono"]
 
 [[example]]
 name = "data_types_variant"
diff --git a/src/serde.rs b/src/serde.rs
index 3c661f3..2b10bb3 100644
--- a/src/serde.rs
+++ b/src/serde.rs
@@ -304,10 +304,10 @@ pub mod chrono {
             fn test_serde() {
                 let now = Utc::now();
                 let dt = WithDateTime {
-                    dt_nanos: now.clone(),
-                    dt_micros: now.clone(),
-                    dt_millis: now.clone(),
-                    dt_secs: now.clone(),
+                    dt_nanos: now,
+                    dt_micros: now,
+                    dt_millis: now,
+                    dt_secs: now,
                 };
                 let serde_dt: WithDateTime =
                     serde_json::from_str(&serde_json::to_string(&dt).unwrap()).unwrap();
@@ -371,7 +371,7 @@ pub mod chrono {
             #[test]
             fn test_serde() {
                 let now = Utc::now().date_naive();
-                let dt = WithDate { d: now.clone() };
+                let dt = WithDate { d: now };
                 let serde_dt: WithDate =
                     serde_json::from_str(&serde_json::to_string(&dt).unwrap()).unwrap();
                 assert!(dt.d == serde_dt.d);
@@ -437,7 +437,7 @@ pub mod chrono {
             #[test]
             fn test_serde() {
                 let now = Utc::now().date_naive();
-                let dt = WithDate { d_32: now.clone() };
+                let dt = WithDate { d_32: now };
                 let serde_dt: WithDate =
                     serde_json::from_str(&serde_json::to_string(&dt).unwrap()).unwrap();
                 assert!(dt.d_32 == serde_dt.d_32);
@@ -447,7 +447,7 @@ pub mod chrono {
             fn test_serde_invalid() {
                 let french_revolution = NaiveDate::from_ymd_opt(1789, 7, 14).unwrap();
                 let dt = WithDate {
-                    d_32: french_revolution.clone(),
+                    d_32: french_revolution,
                 };
                 assert!(serde_json::to_string(&dt).is_err());
             }