diff --git a/crates/voicevox_core/Cargo.toml b/crates/voicevox_core/Cargo.toml
index 1b8904875..96a8bb574 100644
--- a/crates/voicevox_core/Cargo.toml
+++ b/crates/voicevox_core/Cargo.toml
@@ -35,7 +35,7 @@ serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true, features = ["preserve_order"] }
 tempfile.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["rt"] } # FIXME: feature-gateする
 tracing.workspace = true
 uuid = { workspace = true, features = ["v4", "serde"] }
 voicevox_core_macros = { path = "../voicevox_core_macros" }