diff --git a/radicle-crypto/src/lib.rs b/radicle-crypto/src/lib.rs
index cad67d4b..a1392f52 100644
--- a/radicle-crypto/src/lib.rs
+++ b/radicle-crypto/src/lib.rs
@@ -64,7 +64,7 @@ where
 }
 
 /// Cryptographic signature.
-#[derive(PartialEq, Eq, Copy, Clone, Serialize, Deserialize)]
+#[derive(PartialEq, Eq, Hash, Copy, Clone, Serialize, Deserialize)]
 #[serde(into = "String", try_from = "String")]
 pub struct Signature(pub ed25519::Signature);