diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1afe46864b1..1c9207a0cb9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+- Add Hash trait to Selector struct
 
 ## Version 5.0.0-rc.3
 
diff --git a/crates/metadata/src/specs.rs b/crates/metadata/src/specs.rs
index 1d9599f668b..62ff372b7fe 100644
--- a/crates/metadata/src/specs.rs
+++ b/crates/metadata/src/specs.rs
@@ -52,7 +52,10 @@ use serde::{
     Serialize,
 };
 #[cfg(feature = "std")]
-use std::collections::BTreeMap;
+use std::{
+    collections::BTreeMap,
+    hash::Hash,
+};
 
 /// Describes a contract.
 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
@@ -1091,6 +1094,7 @@ where
 }
 
 /// The 4 byte selector to identify constructors and messages
+#[cfg_attr(feature = "std", derive(Hash))]
 #[derive(Debug, Default, PartialEq, Eq, derive_more::From, JsonSchema)]
 pub struct Selector(#[schemars(with = "String")] [u8; 4]);