diff --git a/crates/starknet-types-core/src/hash/pedersen.rs b/crates/starknet-types-core/src/hash/pedersen.rs
index 2175fac..db05c85 100644
--- a/crates/starknet-types-core/src/hash/pedersen.rs
+++ b/crates/starknet-types-core/src/hash/pedersen.rs
@@ -28,7 +28,7 @@ impl StarkHash for Pedersen {
     }
     
     fn hash_single(felt: &Felt) -> Felt {
-        todo!()
+        Felt(PedersenStarkCurve::hash(&Felt::from(0).0,&felt.0))
     }
 }