diff --git a/bitcoin/src/blockdata/transaction.rs b/bitcoin/src/blockdata/transaction.rs
index 7bcba7a23..654388b48 100644
--- a/bitcoin/src/blockdata/transaction.rs
+++ b/bitcoin/src/blockdata/transaction.rs
@@ -309,7 +309,7 @@ pub trait TransactionExt: sealed::Sealed {
     /// This is useful in combination with [`predict_weight`] if you have the transaction already
     /// constructed with a dummy value in the fee output which you'll adjust after calculating the
     /// weight.
-    fn script_pubkey_lens(&self) -> TxOutToScriptPubkeyLengthIter;
+    fn script_pubkey_lens(&self) -> TxOutToScriptPubkeyLengthIter<'_>;
 
     /// Counts the total number of sigops.
     ///