diff --git a/src/builder.rs b/src/builder.rs
index e5cc965c7..3c2830bb4 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -908,7 +908,7 @@ pub fn bundle<V: TryFrom<i64>, FL: OrchardFlavor>(
 /// Marker trait representing bundle signatures in the process of being created.
 pub trait InProgressSignatures: fmt::Debug {
     /// The authorization type of an Orchard action in the process of being authorized.
-    type SpendAuth: fmt::Debug;
+    type SpendAuth: fmt::Debug + Clone;
 }
 
 /// Marker for a bundle in the process of being built.
@@ -1053,7 +1053,7 @@ impl InProgressSignatures for PartiallyAuthorized {
 /// A heisen[`Signature`] for a particular [`Action`].
 ///
 /// [`Signature`]: redpallas::Signature
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum MaybeSigned {
     /// The information needed to sign this [`Action`].
     SigningMetadata(SigningParts),
diff --git a/src/bundle.rs b/src/bundle.rs
index 5b02ea5a4..90e90bbdb 100644
--- a/src/bundle.rs
+++ b/src/bundle.rs
@@ -187,7 +187,7 @@ impl Flags {
 /// Defines the authorization type of an Orchard bundle.
 pub trait Authorization: fmt::Debug {
     /// The authorization type of an Orchard action.
-    type SpendAuth: fmt::Debug;
+    type SpendAuth: fmt::Debug + Clone;
 }
 
 /// A bundle of actions to be applied to the ledger.