diff --git a/packages/better-auth/src/api/routes/sign-out.ts b/packages/better-auth/src/api/routes/sign-out.ts
index 2bd4d462a7..087074b6e6 100644
--- a/packages/better-auth/src/api/routes/sign-out.ts
+++ b/packages/better-auth/src/api/routes/sign-out.ts
@@ -7,6 +7,7 @@ export const signOut = createAuthEndpoint(
 	"/sign-out",
 	{
 		method: "POST",
+		requireHeaders: true,
 	},
 	async (ctx) => {
 		const sessionCookieToken = await ctx.getSignedCookie(