diff --git a/flake.lock b/flake.lock
index 6ef5aca..8b8f1c8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -145,11 +145,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1725634671,
-        "narHash": "sha256-v3rIhsJBOMLR8e/RNWxr828tB+WywYIoajrZKFM+0Gg=",
+        "lastModified": 1729665710,
+        "narHash": "sha256-AlcmCXJZPIlO5dmFzV3V2XF6x/OpNWUV8Y/FMPGd8Z4=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "574d1eac1c200690e27b8eb4e24887f8df7ac27c",
+        "rev": "2768c7d042a37de65bb1b5b3268fc987e534c49d",
         "type": "github"
       },
       "original": {
diff --git a/mnn-sys/build.rs b/mnn-sys/build.rs
index de79a86..525318b 100644
--- a/mnn-sys/build.rs
+++ b/mnn-sys/build.rs
@@ -122,6 +122,7 @@ fn main() -> Result<()> {
     mnn_c_build(PathBuf::from(MANIFEST_DIR).join("mnn_c"), &vendor)
         .with_context(|| "Failed to build mnn_c")?;
     mnn_c_bindgen(&vendor, &out_dir).with_context(|| "Failed to generate mnn_c bindings")?;
+    mnn_cpp_bindgen(&vendor, &out_dir).with_context(|| "Failed to generate mnn_cpp bindings")?;
     println!("cargo:include={vendor}/include", vendor = vendor.display());
     if *TARGET_OS == "macos" {
         #[cfg(feature = "metal")]
@@ -225,6 +226,36 @@ pub fn mnn_c_bindgen(vendor: impl AsRef<Path>, out: impl AsRef<Path>) -> Result<
     Ok(())
 }
 
+pub fn mnn_cpp_bindgen(vendor: impl AsRef<Path>, out: impl AsRef<Path>) -> Result<()> {
+    let vendor = vendor.as_ref();
+    let bindings = bindgen::Builder::default()
+        .clang_args(["-x", "c++"])
+        .clang_args(["-std=c++11"])
+        .clang_arg(CxxOption::VULKAN.cxx())
+        .clang_arg(CxxOption::METAL.cxx())
+        .clang_arg(CxxOption::COREML.cxx())
+        .clang_arg(CxxOption::OPENCL.cxx())
+        .clang_arg(format!("-I{}", vendor.join("include").to_string_lossy()))
+        .generate_cstr(true)
+        .generate_inline_functions(true)
+        .size_t_is_usize(true)
+        .emit_diagnostics()
+        .ctypes_prefix("core::ffi")
+        .header(
+            vendor
+                .join("include")
+                .join("MNN")
+                .join("Interpreter.hpp")
+                .to_string_lossy(),
+        )
+        .allowlist_item(".*SessionInfoCode.*");
+    // let cmd = bindings.command_line_flags().join(" ");
+    // println!("cargo:warn=bindgen: {}", cmd);
+    let bindings = bindings.generate()?;
+    bindings.write_to_file(out.as_ref().join("mnn_cpp.rs"))?;
+    Ok(())
+}
+
 pub fn mnn_c_build(path: impl AsRef<Path>, vendor: impl AsRef<Path>) -> Result<()> {
     let mnn_c = path.as_ref();
     let files = mnn_c.read_dir()?.flatten().map(|e| e.path()).filter(|e| {
diff --git a/mnn-sys/src/lib.rs b/mnn-sys/src/lib.rs
index 89d6a96..ce2bafb 100644
--- a/mnn-sys/src/lib.rs
+++ b/mnn-sys/src/lib.rs
@@ -1,5 +1,11 @@
 use std::ffi::CStr;
 
+pub mod cpp {
+    #![allow(non_upper_case_globals)]
+    #![allow(non_camel_case_types)]
+    #![allow(non_snake_case)]
+    include!(concat!(env!("OUT_DIR"), "/mnn_cpp.rs"));
+}
 mod sys {
     #![allow(non_upper_case_globals)]
     #![allow(non_camel_case_types)]
diff --git a/mnn-sys/vendor b/mnn-sys/vendor
index a74551b..407a1c1 160000
--- a/mnn-sys/vendor
+++ b/mnn-sys/vendor
@@ -1 +1 @@
-Subproject commit a74551b4f34b46ce7027c64e800d49fcab497261
+Subproject commit 407a1c141d459d093f655bf2fed2a8a5e22a77ce
diff --git a/src/interpreter.rs b/src/interpreter.rs
index dd2043c..2abe0b3 100644
--- a/src/interpreter.rs
+++ b/src/interpreter.rs
@@ -526,7 +526,12 @@ impl Interpreter {
         let mut memory = 0f32;
         let memory_ptr = &mut memory as *mut f32;
         let ret = unsafe {
-            mnn_sys::Interpreter_getSessionInfo(self.inner, session.inner, 0, memory_ptr.cast())
+            mnn_sys::Interpreter_getSessionInfo(
+                self.inner,
+                session.inner,
+                mnn_sys::cpp::MNN_Interpreter_SessionInfoCode_MEMORY as _,
+                memory_ptr.cast(),
+            )
         };
         ensure!(
             ret == 1,
@@ -544,7 +549,7 @@ impl Interpreter {
             mnn_sys::Interpreter_getSessionInfo(
                 self.inner,
                 session.inner,
-                1,
+                mnn_sys::cpp::MNN_Interpreter_SessionInfoCode_FLOPS as _,
                 flop_ptr.cast::<libc::c_void>(),
             )
         };
@@ -560,7 +565,12 @@ impl Interpreter {
         let mut resize_status = 0i32;
         let ptr = &mut resize_status as *mut i32;
         let ret = unsafe {
-            mnn_sys::Interpreter_getSessionInfo(self.inner, session.inner, 3, ptr.cast())
+            mnn_sys::Interpreter_getSessionInfo(
+                self.inner,
+                session.inner,
+                mnn_sys::cpp::MNN_Interpreter_SessionInfoCode_RESIZE_STATUS as _,
+                ptr.cast(),
+            )
         };
         ensure!(
         ret == 1,