diff --git a/Cargo.lock b/Cargo.lock
index d035072b5..c3e716f29 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1223,12 +1223,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "fs_extra"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2022715d62ab30faffd124d40b76f4134a550a87792276512b18d63272333394"
-
 [[package]]
 name = "futures"
 version = "0.3.28"
@@ -3971,9 +3965,7 @@ dependencies = [
 name = "voicevox_core_python_api"
 version = "0.0.0"
 dependencies = [
- "anyhow",
  "easy-ext",
- "fs_extra",
  "log",
  "once_cell",
  "pyo3",
diff --git a/crates/voicevox_core_python_api/Cargo.toml b/crates/voicevox_core_python_api/Cargo.toml
index 34d317e73..de543a124 100644
--- a/crates/voicevox_core_python_api/Cargo.toml
+++ b/crates/voicevox_core_python_api/Cargo.toml
@@ -26,7 +26,3 @@ serde_json.workspace = true
 tokio.workspace = true
 tracing.workspace = true
 voicevox_core.workspace = true
-
-[build-dependencies]
-anyhow.workspace = true
-fs_extra = "1.2.0"
diff --git a/crates/voicevox_core_python_api/build.rs b/crates/voicevox_core_python_api/build.rs
deleted file mode 100644
index c06dcaae3..000000000
--- a/crates/voicevox_core_python_api/build.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-use fs_extra::dir::CopyOptions;
-
-fn main() -> anyhow::Result<()> {
-    fs_extra::dir::copy(
-        "../../model",
-        "./python/voicevox_core/",
-        &CopyOptions {
-            overwrite: true,
-            ..Default::default()
-        },
-    )?;
-    Ok(())
-}