diff --git a/src/command.rs b/src/command.rs
index 18c973b..3c3a03e 100644
--- a/src/command.rs
+++ b/src/command.rs
@@ -1,7 +1,7 @@
 pub mod class;
 pub mod instruction;
 
-pub type Data = heapless_bytes::Bytes<crate::MAX_COMMAND_DATA>;
+pub type Data = heapless::ByteBuf<crate::MAX_COMMAND_DATA>;
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct Command {
@@ -83,7 +83,7 @@ impl core::convert::TryFrom<&[u8]> for Command {
             p1: header[2],
             p2: header[3],
             le: parsed.le,
-            data: Data::try_from_slice(data_slice).unwrap(),
+            data: Data::from_slice(data_slice).unwrap(),
             extended: parsed.extended,
         })
     }
diff --git a/src/lib.rs b/src/lib.rs
index 921f783..03e746e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,7 @@
 // #![no_std]
 
 #[allow(non_camel_case_types)]
-pub type U3076 = <heapless_bytes::consts::U2048 as core::ops::Add<heapless_bytes::consts::U1024>>::Output;
+pub type U3076 = <heapless::consts::U2048 as core::ops::Add<heapless::consts::U1024>>::Output;
 #[allow(non_camel_case_types)]
 pub type MAX_COMMAND_DATA = U3076;
 
diff --git a/src/response.rs b/src/response.rs
index cb36cac..e52310d 100644
--- a/src/response.rs
+++ b/src/response.rs
@@ -1,7 +1,7 @@
 pub mod status;
 pub use status::Status;
 
-pub type Data = heapless_bytes::Bytes<crate::MAX_COMMAND_DATA>;
+pub type Data = heapless::ByteBuf<crate::MAX_COMMAND_DATA>;
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum Response {