diff --git a/src/gates/arithmetic.rs b/src/gates/arithmetic.rs
index 8bbacf3a..3c9dcb18 100644
--- a/src/gates/arithmetic.rs
+++ b/src/gates/arithmetic.rs
@@ -138,7 +138,7 @@ impl<F: Extendable<D>, const D: usize> Gate<F, D> for ArithmeticExtensionGate<D>
     }
 }
 
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 struct ArithmeticExtensionGenerator<F: Extendable<D>, const D: usize> {
     gate_index: usize,
     const_0: F,