diff --git a/Cargo.lock b/Cargo.lock
index b9b488f5..164a54de 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -474,7 +474,7 @@ checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
 
 [[package]]
 name = "ledger_device_sdk"
-version = "1.13.1"
+version = "1.14.1"
 dependencies = [
  "const-zero",
  "include_gif",
@@ -489,7 +489,7 @@ dependencies = [
 
 [[package]]
 name = "ledger_secure_sdk_sys"
-version = "1.4.3"
+version = "1.4.4"
 dependencies = [
  "bindgen",
  "cc",
diff --git a/ledger_device_sdk/Cargo.toml b/ledger_device_sdk/Cargo.toml
index 653c8dae..872d6068 100644
--- a/ledger_device_sdk/Cargo.toml
+++ b/ledger_device_sdk/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ledger_device_sdk"
-version = "1.14.0"
+version = "1.14.1"
 authors = ["yhql", "yogh333", "agrojean-ledger", "kingofpayne"]
 edition = "2021"
 license.workspace = true
@@ -21,13 +21,11 @@ rand_core = { version = "0.6.3", default_features = false }
 zeroize = { version = "1.6.0", default_features = false }
 numtoa = "0.2.4"
 const-zero = "0.1.1"
-
-[target.'cfg(target_os="nanos")'.dependencies]
-ledger_secure_sdk_sys = {path = "../ledger_secure_sdk_sys", version = "1.4.3"}
-
-[target.'cfg(not(target_os="nanos"))'.dependencies]
-ledger_secure_sdk_sys = {path = "../ledger_secure_sdk_sys", version = "1.4.3", features = ["heap"]}
+ledger_secure_sdk_sys = { path = "../ledger_secure_sdk_sys", version = "1.4.4" }
 
 [features]
 speculos = []
 ccid = []
+heap = [ "ledger_secure_sdk_sys/heap" ]
+
+default = [ "heap" ]
diff --git a/ledger_secure_sdk_sys/Cargo.toml b/ledger_secure_sdk_sys/Cargo.toml
index 168fc85f..d6a93f15 100644
--- a/ledger_secure_sdk_sys/Cargo.toml
+++ b/ledger_secure_sdk_sys/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ledger_secure_sdk_sys"
-version = "1.4.3"
+version = "1.4.4"
 authors = ["yhql", "agrojean-ledger"]
 edition = "2021"
 license.workspace = true
diff --git a/ledger_secure_sdk_sys/src/lib.rs b/ledger_secure_sdk_sys/src/lib.rs
index 64c97d95..c3f06b13 100644
--- a/ledger_secure_sdk_sys/src/lib.rs
+++ b/ledger_secure_sdk_sys/src/lib.rs
@@ -4,7 +4,7 @@
 #![allow(non_snake_case)]
 
 use core::ffi::c_void;
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 use core::mem::MaybeUninit;
 
 pub mod buttons;
@@ -35,22 +35,22 @@ pub fn pic_rs_mut<T>(x: &mut T) -> &mut T {
     unsafe { &mut *ptr }
 }
 
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 use critical_section::RawRestoreState;
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 use embedded_alloc::Heap;
 
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 #[global_allocator]
 static HEAP: Heap = Heap::empty();
 
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 struct CriticalSection;
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 critical_section::set_impl!(CriticalSection);
 
 /// Default empty implementation as we don't have concurrency.
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 unsafe impl critical_section::Impl for CriticalSection {
     unsafe fn acquire() -> RawRestoreState {}
     unsafe fn release(_restore_state: RawRestoreState) {}
@@ -61,7 +61,7 @@ unsafe impl critical_section::Impl for CriticalSection {
 /// The heap is stored in the stack, and has a fixed size.
 /// This method is called just before [sample_main].
 #[no_mangle]
-#[cfg(feature = "heap")]
+#[cfg(all(feature = "heap", not(target_os = "nanos")))]
 extern "C" fn heap_init() {
     const HEAP_SIZE: usize = 8192;
     static mut HEAP_MEM: [MaybeUninit<u8>; HEAP_SIZE] = [MaybeUninit::uninit(); HEAP_SIZE];
@@ -69,7 +69,7 @@ extern "C" fn heap_init() {
 }
 
 #[no_mangle]
-#[cfg(not(feature = "heap"))]
+#[cfg(any(not(feature = "heap"), target_os = "nanos"))]
 extern "C" fn heap_init() {}
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));