diff --git a/bitcoin/src/bip152.rs b/bitcoin/src/bip152.rs
index cb6fb9ec3..42ce0fe39 100644
--- a/bitcoin/src/bip152.rs
+++ b/bitcoin/src/bip152.rs
@@ -404,6 +404,7 @@ mod test {
     use crate::consensus::encode::{deserialize, serialize};
     use crate::locktime::absolute;
     use crate::merkle_tree::TxMerkleNode;
+    use crate::transaction::OutPointExt;
     use crate::{
         transaction, Amount, CompactTarget, OutPoint, ScriptBuf, Sequence, TxIn, TxOut, Txid,
         Witness,
diff --git a/bitcoin/src/blockdata/transaction.rs b/bitcoin/src/blockdata/transaction.rs
index e672322f0..c5e5dd09d 100644
--- a/bitcoin/src/blockdata/transaction.rs
+++ b/bitcoin/src/blockdata/transaction.rs
@@ -99,21 +99,20 @@ impl OutPoint {
     pub const COINBASE_PREVOUT: Self = Self { txid: Txid::COINBASE_PREVOUT, vout: u32::MAX };
 }
 
-impl OutPoint {
-    /// Creates a new [`OutPoint`].
-    #[inline]
-    #[deprecated(since = "TBD", note = "use struct initialization syntax instead")]
-    pub const fn new(txid: Txid, vout: u32) -> OutPoint { OutPoint { txid, vout } }
+crate::internal_macros::define_extension_trait! {
+    /// Extension functionality for the [`OutPoint`] type.
+    pub trait OutPointExt impl for OutPoint {
+        /// Creates a new [`OutPoint`].
+        #[inline]
+        #[deprecated(since = "TBD", note = "use struct initialization syntax instead")]
+        #[allow(clippy::new-ret-no-self)]
+        fn new(txid: Txid, vout: u32) -> Self { OutPoint { txid, vout } }
 
-    /// Creates a "null" `OutPoint`.
-    #[inline]
-    #[deprecated(since = "TBD", note = "use OutPoint::COINBASE_PREVOUT instead")]
-    pub fn null() -> OutPoint { Self::COINBASE_PREVOUT }
-
-    /// Checks if an `OutPoint` is "null".
-    #[inline]
-    #[deprecated(since = "TBD", note = "use outpoint == OutPoint::COINBASE_PREVOUT instead")]
-    pub fn is_null(&self) -> bool { *self == OutPoint::null() }
+        /// Checks if an `OutPoint` is "null".
+        #[inline]
+        #[deprecated(since = "TBD", note = "use outpoint == OutPoint::COINBASE_PREVOUT instead")]
+        fn is_null(&self) -> bool { *self == OutPoint::COINBASE_PREVOUT }
+    }
 }
 
 impl fmt::Display for OutPoint {