diff --git a/packages/auth-core/src/consts.ts b/packages/auth-core/src/consts.ts
index 2a847e58c..335b25f4c 100644
--- a/packages/auth-core/src/consts.ts
+++ b/packages/auth-core/src/consts.ts
@@ -3,8 +3,10 @@
 export const builtinOAuthProviderNames = [
   "builtin::oauth_apple",
   "builtin::oauth_azure",
+  "builtin::oauth_discord",
   "builtin::oauth_github",
   "builtin::oauth_google",
+  "builtin::oauth_slack",
 ] as const;
 export type BuiltinOAuthProviderNames =
   (typeof builtinOAuthProviderNames)[number];
diff --git a/packages/auth-nextjs/src/app/index.ts b/packages/auth-nextjs/src/app/index.ts
index a39bf23cd..383d837a7 100644
--- a/packages/auth-nextjs/src/app/index.ts
+++ b/packages/auth-nextjs/src/app/index.ts
@@ -25,7 +25,7 @@ export class NextAppAuth extends NextAuth {
     () =>
       new NextAuthSession(
         this.client,
-        cookies().get(this.options.authCookieName)?.value.split(";")[0]
+        cookies().get(this.options.authCookieName)?.value.split(";")[0] ?? null
       )
   );
 
diff --git a/packages/auth-nextjs/src/pages/server.ts b/packages/auth-nextjs/src/pages/server.ts
index 79550ca8c..5b7924bc8 100644
--- a/packages/auth-nextjs/src/pages/server.ts
+++ b/packages/auth-nextjs/src/pages/server.ts
@@ -35,7 +35,7 @@ export class NextPagesAuth extends NextAuth {
       sessionCache.get(req) ??
       new NextAuthSession(
         this.client,
-        req.cookies[this.options.authCookieName]?.split(";")[0]
+        req.cookies[this.options.authCookieName]?.split(";")[0] ?? null
       );
     sessionCache.set(req, session);
     return session;
diff --git a/packages/auth-nextjs/src/shared.ts b/packages/auth-nextjs/src/shared.ts
index 6361e03e8..ffcaa7480 100644
--- a/packages/auth-nextjs/src/shared.ts
+++ b/packages/auth-nextjs/src/shared.ts
@@ -519,7 +519,7 @@ export class NextAuthSession {
   public readonly client: Client;
 
   /** @internal */
-  constructor(client: Client, private readonly authToken: string | undefined) {
+  constructor(client: Client, public readonly authToken: string | null) {
     this.client = this.authToken
       ? client.withGlobals({ "ext::auth::client_token": this.authToken })
       : client;