diff --git a/index.d.ts b/index.d.ts
index aabb7f3..e91f89a 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -478,6 +478,7 @@ declare global {
                 invert?: boolean
                 grayscale?: boolean
                 quality?: number
+                lossless?: boolean
             }[]
         ): void
     }