diff --git a/src/app/api/auth/[...nextauth]/route.ts b/src/app/api/auth/[...nextauth]/route.ts
index ae20e28..462c56a 100644
--- a/src/app/api/auth/[...nextauth]/route.ts
+++ b/src/app/api/auth/[...nextauth]/route.ts
@@ -14,6 +14,8 @@ export const {
   providers: [
     CredentialsProvider({
       name: 'Credentials',
+      // The 'type' property is required for the Credentials provider.
+      type: 'credentials',
       credentials: {
         email: { label: 'Email', type: 'email' },
         password: { label: 'Password', type: 'password' },