diff --git a/pallets/marketplace/src/types.rs b/pallets/marketplace/src/types.rs
index 26a0e884..a586a761 100644
--- a/pallets/marketplace/src/types.rs
+++ b/pallets/marketplace/src/types.rs
@@ -140,7 +140,7 @@ pub struct Assignment<Reward> {
     pub pub_keys: PubKeys,
 }
 
-pub const NUMBER_OF_PUB_KEYS: u32 = 2;
+pub const NUMBER_OF_PUB_KEYS: u32 = 3;
 pub const PUB_KEYS_MAX_LENGTH: u32 = 33;
 
 pub type PubKeyBytes = BoundedVec<u8, ConstU32<PUB_KEYS_MAX_LENGTH>>;
@@ -153,6 +153,7 @@ pub type PubKeys = BoundedVec<PubKey, ConstU32<NUMBER_OF_PUB_KEYS>>;
 pub enum PubKey {
     SECP256r1(PubKeyBytes),
     SECP256k1(PubKeyBytes),
+    ED25519(PubKeyBytes),
 }
 
 pub type AssignmentFor<T> = Assignment<<T as Config>::Balance>;