diff --git a/types/set-cookie-parser/index.d.ts b/types/set-cookie-parser/index.d.ts
index 23d9b41b7b..0d94531323 100644
--- a/types/set-cookie-parser/index.d.ts
+++ b/types/set-cookie-parser/index.d.ts
@@ -29,6 +29,7 @@ declare module "set-cookie-parser" {
             domain?: string;
             secure?: boolean;
             httpOnly?: boolean;
+            sameSite?: string;
         }
 
         interface CookieMap {
diff --git a/types/set-cookie-parser/set-cookie-parser-tests.ts b/types/set-cookie-parser/set-cookie-parser-tests.ts
index fdc0602b89..5c5d952afc 100644
--- a/types/set-cookie-parser/set-cookie-parser-tests.ts
+++ b/types/set-cookie-parser/set-cookie-parser-tests.ts
@@ -17,7 +17,7 @@ assert.equal(cookies[0].name, "foo");
 assert.equal(cookies[0].value, "bar");
 
 // Optional properties included test
-var optionalIncluded = "foo=bar; Max-Age=1000; Domain=.example.com; Path=/; Expires=Tue, 01 Jul 2025 10:01:11 GMT; HttpOnly; Secure";
+var optionalIncluded = "foo=bar; Max-Age=1000; Domain=.example.com; Path=/; Expires=Tue, 01 Jul 2025 10:01:11 GMT; HttpOnly; Secure; SameSite=Strict";
 cookies = setCookie(optionalIncluded);
 assert.equal(cookies.length, 1);
 assert.equal(cookies[0].name, "foo");
@@ -28,6 +28,7 @@ assert.deepEqual(cookies[0].expires, new Date('Tue Jul 01 2025 06:01:11 GMT-0400
 assert.equal(cookies[0].maxAge, 1000);
 assert.equal(cookies[0].httpOnly, true);
 assert.equal(cookies[0].secure, true);
+assert.equal(cookies[0].sameSite, "Strict");
 
 // Array of strings test
 var arrayOfCookies = ["bam=baz", "foo=bar"];