diff --git a/Cargo.toml b/Cargo.toml
index 15cc596..083e3c0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cosey"
-version = "0.2.0"
+version = "0.3.0"
 authors = ["Nicolas Stalder <n@stalder.io>"]
 license = "Apache-2.0 OR MIT"
 description = "Data types and serde for public COSE_Keys"
@@ -11,7 +11,7 @@ readme = "README.md"
 edition = "2018"
 
 [dependencies]
-heapless-bytes = "0.2.0"
+heapless-bytes = "0.3.0"
 serde_repr = "0.1"
 
 [dependencies.serde]
diff --git a/src/lib.rs b/src/lib.rs
index c0ba6be..4707caf 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -43,7 +43,7 @@
    }
 */
 
-pub use heapless_bytes::{consts, Bytes as ByteBuf};
+pub use heapless_bytes::Bytes;
 use serde::Serialize;
 use serde_repr::{Deserialize_repr, Serialize_repr};
 
@@ -142,8 +142,8 @@ trait PublicKeyConstants {
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct P256PublicKey {
-    pub x: ByteBuf<consts::U32>,
-    pub y: ByteBuf<consts::U32>,
+    pub x: Bytes<32>,
+    pub y: Bytes<32>,
 }
 
 impl PublicKeyConstants for P256PublicKey {
@@ -154,8 +154,8 @@ impl PublicKeyConstants for P256PublicKey {
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct EcdhEsHkdf256PublicKey {
-    pub x: ByteBuf<consts::U32>,
-    pub y: ByteBuf<consts::U32>,
+    pub x: Bytes<32>,
+    pub y: Bytes<32>,
 }
 
 impl PublicKeyConstants for EcdhEsHkdf256PublicKey {
@@ -166,7 +166,7 @@ impl PublicKeyConstants for EcdhEsHkdf256PublicKey {
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct Ed25519PublicKey {
-    pub x: ByteBuf<consts::U32>,
+    pub x: Bytes<32>,
 }
 
 impl PublicKeyConstants for Ed25519PublicKey {
@@ -186,7 +186,7 @@ impl PublicKeyConstants for TotpPublicKey {
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct X25519PublicKey {
-    pub pub_key: ByteBuf<consts::U32>,
+    pub pub_key: Bytes<32>,
 }
 
 // impl serde::Serialize for PublicKey {