diff --git a/Cargo.lock b/Cargo.lock
index 6372f6c..096231d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1901,7 +1901,7 @@ dependencies = [
 
 [[package]]
 name = "sbv2_bindings"
-version = "0.2.0-alpha1"
+version = "0.2.0-alpha2"
 dependencies = [
  "anyhow",
  "ndarray",
@@ -1911,7 +1911,7 @@ dependencies = [
 
 [[package]]
 name = "sbv2_core"
-version = "0.2.0-alpha1"
+version = "0.2.0-alpha2"
 dependencies = [
  "anyhow",
  "dotenvy",
diff --git a/sbv2_api/Cargo.toml b/sbv2_api/Cargo.toml
index 45b6838..b13e631 100644
--- a/sbv2_api/Cargo.toml
+++ b/sbv2_api/Cargo.toml
@@ -9,7 +9,7 @@ axum = "0.7.5"
 dotenvy.workspace = true
 env_logger.workspace = true
 log = "0.4.22"
-sbv2_core = { version = "0.2.0-alpha", path = "../sbv2_core" }
+sbv2_core = { version = "0.2.0-alpha2", path = "../sbv2_core" }
 serde = { version = "1.0.210", features = ["derive"] }
 tokio = { version = "1.40.0", features = ["full"] }
 utoipa = { version = "5.0.0", features = ["axum_extras"] }
diff --git a/sbv2_bindings/Cargo.toml b/sbv2_bindings/Cargo.toml
index 21bb694..91c6e20 100644
--- a/sbv2_bindings/Cargo.toml
+++ b/sbv2_bindings/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sbv2_bindings"
-version = "0.2.0-alpha1"
+version = "0.2.0-alpha2"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -12,4 +12,4 @@ crate-type = ["cdylib"]
 anyhow.workspace = true
 ndarray.workspace = true
 pyo3 = { version = "0.22.0", features = ["anyhow"] }
-sbv2_core = { version = "0.2.0-alpha", path = "../sbv2_core" }
+sbv2_core = { version = "0.2.0-alpha2", path = "../sbv2_core" }
diff --git a/sbv2_core/Cargo.toml b/sbv2_core/Cargo.toml
index 209470d..0c5259b 100644
--- a/sbv2_core/Cargo.toml
+++ b/sbv2_core/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "sbv2_core"
 description = "Style-Bert-VITSの推論ライブラリ"
-version = "0.2.0-alpha1"
+version = "0.2.0-alpha2"
 edition = "2021"
 license = "MIT"
 readme = "../README.md"
diff --git a/sbv2_core/src/bert.rs b/sbv2_core/src/bert.rs
index 3bd8396..0710bf6 100644
--- a/sbv2_core/src/bert.rs
+++ b/sbv2_core/src/bert.rs
@@ -1,5 +1,5 @@
 use crate::error::Result;
-use ndarray::Array2;
+use ndarray::{Array2, Ix2};
 use ort::Session;
 
 pub fn predict(
@@ -14,10 +14,10 @@ pub fn predict(
         }?
     )?;
 
-    let output = outputs.get("output").unwrap();
+    let output = outputs["output"]
+        .try_extract_tensor::<f32>()?
+        .into_dimensionality::<Ix2>()?
+        .to_owned();
 
-    let content = output.try_extract_tensor::<f32>()?.to_owned();
-    let (data, _) = content.clone().into_raw_vec_and_offset();
-
-    Ok(Array2::from_shape_vec((content.shape()[0], content.shape()[1]), data).unwrap())
+    Ok(output)
 }
diff --git a/sbv2_core/src/model.rs b/sbv2_core/src/model.rs
index 485c3f7..9f2a221 100644
--- a/sbv2_core/src/model.rs
+++ b/sbv2_core/src/model.rs
@@ -1,5 +1,5 @@
 use crate::error::Result;
-use ndarray::{array, Array1, Array2, Array3, Axis};
+use ndarray::{array, Array1, Array2, Array3, Axis, Ix3};
 use ort::{GraphOptimizationLevel, Session};
 
 #[allow(clippy::vec_init_then_push, unused_variables)]
@@ -76,18 +76,10 @@ pub fn synthesize(
         "length_scale" => array![length_scale],
     }?)?;
 
-    let audio_array = outputs
-        .get("output")
-        .unwrap()
+    let audio_array = outputs["output"]
         .try_extract_tensor::<f32>()?
+        .into_dimensionality::<Ix3>()?
         .to_owned();
 
-    Ok(Array3::from_shape_vec(
-        (
-            audio_array.shape()[0],
-            audio_array.shape()[1],
-            audio_array.shape()[2],
-        ),
-        audio_array.into_raw_vec_and_offset().0,
-    )?)
+    Ok(audio_array)
 }