diff --git a/index.d.ts b/index.d.ts
index 7d16190..aabb7f3 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -524,6 +524,7 @@ declare global {
                 domain?: string
                 secure?: boolean
                 httpOnly?: boolean
+                sameSite?: "strict" | "lax" | "none"
             }
         ): void
     }