diff --git a/client/lib/src/const.ts b/client/lib/src/const.ts
index 69d3f193..76db00f6 100644
--- a/client/lib/src/const.ts
+++ b/client/lib/src/const.ts
@@ -56,6 +56,7 @@ export const F0Detector = {
     crepe_tiny: "crepe_tiny",
     rmvpe: "rmvpe",
     rmvpe_onnx: "rmvpe_onnx",
+    fcpe: "fcpe",
 } as const;
 export type F0Detector = (typeof F0Detector)[keyof typeof F0Detector];