diff --git a/typings/internalBinding/ffi.d.ts b/typings/internalBinding/ffi.d.ts
index 0294d1987b03..bebf2afa24d0 100644
--- a/typings/internalBinding/ffi.d.ts
+++ b/typings/internalBinding/ffi.d.ts
@@ -32,7 +32,7 @@ declare namespace InternalFFIBinding {
   }
 
   class DynamicLibrary {
-    constructor(path: string | null);
+    constructor(path: string | null, binary?: ArrayBufferView);
 
     readonly path: string;
     readonly symbols: Record<string, bigint>;