diff --git a/app/api/auth/[...nextauth]/route.ts b/app/api/auth/[...nextauth]/route.ts
index 9123b2d1..b20c1b1c 100644
--- a/app/api/auth/[...nextauth]/route.ts
+++ b/app/api/auth/[...nextauth]/route.ts
@@ -115,7 +115,7 @@ const authOptions: NextAuthOptions = {
         let nickname;
         if (platformType === 'KAKAO') {
           // 카카오는 항상 nickname을 제공
-          nickname = (profile as KakaoProfile)?.nickname;
+          nickname = (profile as KakaoProfile)?.properties?.nickname;
         } else if (platformType === 'APPLE') {
           if (appleFirstInfo?.name) {
             // 애플 최초 로그인시에만 이름 정보 사용
diff --git a/lib/types/next-auth.d.ts b/lib/types/next-auth.d.ts
index 6840be08..91ad30ee 100644
--- a/lib/types/next-auth.d.ts
+++ b/lib/types/next-auth.d.ts
@@ -37,13 +37,6 @@ declare module 'next-auth' {
     name?: string | null;
     image?: string | null;
   }
-
-  interface Profile extends KakaoProfile {
-    sub?: string;
-    email?: string;
-    name?: string;
-    image?: string;
-  }
 }
 
 export interface AppleRequest {
@@ -60,8 +53,21 @@ export interface AppleUserInfo {
     lastName?: string;
   };
 }
-
-export interface KakaoProfile {
-  nickname?: string;
-  [key: string]: unknown;
+interface KakaoProfile {
+  id: number;
+  connected_at: string;
+  properties: {
+    nickname: string;
+  };
+  kakao_account: {
+    profile_nickname_needs_agreement: boolean;
+    profile: {
+      nickname: string;
+    };
+    has_email: boolean;
+    email_needs_agreement: boolean;
+    is_email_valid: boolean;
+    is_email_verified: boolean;
+    email: string;
+  };
 }