diff --git a/crates/voicevox_core/src/lib.rs b/crates/voicevox_core/src/lib.rs
index fff9d4926..beb654cf9 100644
--- a/crates/voicevox_core/src/lib.rs
+++ b/crates/voicevox_core/src/lib.rs
@@ -1,3 +1,6 @@
+#![deny(unsafe_code)]
+
+#[allow(unsafe_code)]
 mod c_export;
 mod engine;
 mod error;
diff --git a/crates/voicevox_core/src/status.rs b/crates/voicevox_core/src/status.rs
index 4e97b9872..8c2bfba5d 100644
--- a/crates/voicevox_core/src/status.rs
+++ b/crates/voicevox_core/src/status.rs
@@ -93,7 +93,9 @@ impl SupportedDevices {
     }
 }
 
+#[allow(unsafe_code)]
 unsafe impl Send for Status {}
+#[allow(unsafe_code)]
 unsafe impl Sync for Status {}
 
 impl Status {