diff --git a/src/clock.rs b/src/clock.rs
index bca4fce..f3ad9a0 100644
--- a/src/clock.rs
+++ b/src/clock.rs
@@ -7,7 +7,7 @@ pub trait Clock {
 
 /// `SystemClock` uses the system's clock to get the current time.
 /// This Clock should be used for real use-cases.
-#[derive(Debug, Default)]
+#[derive(Debug, Default, Clone)]
 pub struct SystemClock {}
 
 impl Clock for SystemClock {