diff --git a/openpgp-card/src/lib.rs b/openpgp-card/src/lib.rs
index 09c46ca..89b1d5e 100644
--- a/openpgp-card/src/lib.rs
+++ b/openpgp-card/src/lib.rs
@@ -528,7 +528,7 @@ impl PinType {
 }
 
 /// Identify a Key slot on an OpenPGP card
-#[derive(Debug, Clone, Copy, Eq, PartialEq)]
+#[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
 #[non_exhaustive]
 pub enum KeyType {
     Signing,