diff --git a/zebra-consensus/src/error.rs b/zebra-consensus/src/error.rs
index 7ec970c1..0e324ec7 100644
--- a/zebra-consensus/src/error.rs
+++ b/zebra-consensus/src/error.rs
@@ -9,7 +9,7 @@ use thiserror::Error;
 
 use crate::BoxError;
 
-#[derive(Error, Debug, PartialEq)]
+#[derive(Error, Copy, Clone, Debug, PartialEq)]
 pub enum SubsidyError {
     #[error("no coinbase transaction in block")]
     NoCoinbase,
@@ -18,7 +18,7 @@ pub enum SubsidyError {
     FoundersRewardNotFound,
 }
 
-#[derive(Error, Debug, PartialEq)]
+#[derive(Error, Clone, Debug, PartialEq)]
 pub enum TransactionError {
     #[error("first transaction must be coinbase")]
     CoinbasePosition,
@@ -108,7 +108,7 @@ impl From<SubsidyError> for BlockError {
     }
 }
 
-#[derive(Error, Debug, PartialEq)]
+#[derive(Error, Clone, Debug, PartialEq)]
 pub enum BlockError {
     #[error("block contains invalid transactions")]
     Transaction(#[from] TransactionError),
diff --git a/zebra-script/src/lib.rs b/zebra-script/src/lib.rs
index e81dbd3f..9fcfd56e 100644
--- a/zebra-script/src/lib.rs
+++ b/zebra-script/src/lib.rs
@@ -24,7 +24,7 @@ use zebra_chain::{
     transparent,
 };
 
-#[derive(Debug, Display, Error, PartialEq)]
+#[derive(Copy, Clone, Debug, Display, Error, PartialEq)]
 #[non_exhaustive]
 /// An Error type representing the error codes returned from zcash_script.
 pub enum Error {