diff --git a/src/common/constants.js b/src/common/constants.js
index e6808cf..0dc10d0 100644
--- a/src/common/constants.js
+++ b/src/common/constants.js
@@ -1,4 +1,5 @@
 export const CONTACT = 'otlplus@sparcs.org';
+export const PORTAL = 'https://cais.kaist.ac.kr';
 
 export const TIMETABLE_START_HOUR = 8;
 export const TIMETABLE_END_HOUR = 24;
diff --git a/src/components/sections/main/AcademicScheduleSection.jsx b/src/components/sections/main/AcademicScheduleSection.jsx
index dac2da0..3fd125f 100644
--- a/src/components/sections/main/AcademicScheduleSection.jsx
+++ b/src/components/sections/main/AcademicScheduleSection.jsx
@@ -8,6 +8,7 @@ import { appBoundClassNames as classNames } from '../../../common/boundClassName
 import semesterShape from '../../../shapes/model/subject/SemesterShape';
 
 import { getCurrentSchedule, getSemesterName } from '../../../utils/semesterUtils';
+import { PORTAL } from '@/common/constants';
 
 class AcademicScheduleSection extends Component {
   constructor(props) {
@@ -91,7 +92,7 @@ class AcademicScheduleSection extends Component {
           {getAcademicScheduleContent()}
           <div className={classNames('buttons')}>
             <a
-              href="https://ssogw6.kaist.ac.kr"
+              href={PORTAL}
               className={classNames('text-button')}
               target="_blank"
               rel="noopener noreferrer">