diff --git a/atat/Cargo.toml b/atat/Cargo.toml
index 9b77ba58..dda22b27 100644
--- a/atat/Cargo.toml
+++ b/atat/Cargo.toml
@@ -23,6 +23,8 @@ nb = "^1"
 heapless = { version = "^0.7.0", features = ["serde"] }
 serde_at = { path = "../serde_at", version = "^0.13.1-alpha.0", optional = true }
 atat_derive = { path = "../atat_derive", version = "^0.13.1-alpha.0", optional = true }
+serde_bytes = { version = "0.11.5", default-features = false, optional = true }
+heapless-bytes = { version = "0.3.0", optional = true }
 bbqueue = "0.5"
 
 log = { version = "^0.4", default-features = false, optional = true }
@@ -39,9 +41,11 @@ stm32l4xx-hal = { git = "https://github.com/MathiasKoch/stm32l4xx-hal", branch =
 ] }
 
 [features]
-default = ["derive"]
+default = ["derive", "bytes"]
 derive = ["atat_derive", "serde_at"]
 
+bytes = ["heapless-bytes", "serde_bytes"]
+
 std = ["serde_at/std"]
 
 defmt-default = ["defmt"]
diff --git a/atat/src/derive.rs b/atat/src/derive.rs
index 44388cb2..d0e0e504 100644
--- a/atat/src/derive.rs
+++ b/atat/src/derive.rs
@@ -8,6 +8,11 @@ pub trait AtatLen {
     const LEN: usize;
 }
 
+#[cfg(feature = "bytes")]
+impl<const N: usize> AtatLen for heapless_bytes::Bytes<N> {
+    const LEN: usize = N;
+}
+
 macro_rules! impl_length {
     ($type:ty, $len:expr) => {
         #[allow(clippy::use_self)]
diff --git a/atat/src/lib.rs b/atat/src/lib.rs
index 411ed4d9..aab2e949 100644
--- a/atat/src/lib.rs
+++ b/atat/src/lib.rs
@@ -245,6 +245,9 @@ pub use bbqueue;
 #[cfg(feature = "bytes")]
 pub use serde_bytes;
 
+#[cfg(feature = "bytes")]
+pub use heapless_bytes;
+
 #[cfg(feature = "derive")]
 pub use atat_derive;
 #[cfg(feature = "derive")]