diff --git a/alter-scripts/alter-1.55.py b/alter-scripts/alter-1.55.py
deleted file mode 100644
index 8fd77625..00000000
--- a/alter-scripts/alter-1.55.py
+++ /dev/null
@@ -1,77 +0,0 @@
-import os
-import sys
-import uuid
-import django
-
-from connection import execute
-
-os.chdir("..")
-sys.path.append(os.getcwd())
-os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mulearnbackend.settings")
-django.setup()
-from utils.utils import generate_code
-
-from django.db.transaction import atomic
-
-
-def get_circle_meeting_logs():
-    query = (
-        f"SELECT id, attendees, created_at, updated_at, images FROM circle_meeting_log"
-    )
-    return execute(query)
-
-
-def create_attendees_table():
-    query = """CREATE TABLE circle_meet_attendees (
-        id          VARCHAR(36) PRIMARY KEY NOT NULL,
-        meet_id     VARCHAR(36) NOT NULL,
-        user_id     VARCHAR(36) NOT NULL,
-        note        VARCHAR(1000),
-        joined_at   DATETIME,
-        approved_by VARCHAR(36),
-        created_at  DATETIME    NOT NULL,
-        updated_at  DATETIME    NOT NULL,
-        CONSTRAINT fk_circle_meet_attendees_meet_id FOREIGN KEY (meet_id) REFERENCES circle_meeting_log(id),
-        CONSTRAINT fk_circle_meet_attendees_user_id FOREIGN KEY (user_id) REFERENCES user(id),
-        CONSTRAINT fk_circle_meet_attendees_approved_by FOREIGN KEY (approved_by) REFERENCES user(id)
-    )"""
-    execute(query)
-
-
-def migrate_attendees_to_table():
-    for meet_id, attendees, created_at, updated_at, images in get_circle_meeting_logs():
-        attendees = (attendees if attendees else "").split(",")
-        meet_code = "OLD" + generate_code(3)
-        query = f"UPDATE circle_meeting_log SET meet_code = '{meet_code}', is_started = {int(images is not None)}, is_report_submitted = {int(images is not None)} WHERE id = '{meet_id}'"
-        execute(query)
-        for attendee in attendees:
-            query = f"""
-            INSERT INTO circle_meet_attendees (id, meet_id, user_id, joined_at, approved_by, created_at, updated_at) VALUES 
-            ('{str(uuid.uuid4())}', '{meet_id}', '{attendee}', '{updated_at}', '{attendee}', '{created_at}', '{updated_at}');
-            """
-            execute(query)
-
-
-if __name__ == "__main__":
-    with atomic():
-        create_attendees_table()
-        execute(
-            """
-                ALTER TABLE circle_meeting_log 
-                    MODIFY COLUMN `day` VARCHAR(20),
-                    ADD COLUMN title VARCHAR(100) NOT NULL AFTER circle_id,
-                    ADD COLUMN location VARCHAR(200) NOT NULL AFTER meet_place,
-                    ADD COLUMN meet_code VARCHAR(6) NOT NULL AFTER id,
-                    ADD COLUMN pre_requirements VARCHAR(1000) AFTER agenda,
-                    ADD COLUMN is_public BOOLEAN DEFAULT TRUE NOT NULL AFTER pre_requirements,
-                    ADD COLUMn max_attendees INT DEFAULT -1 AFTER pre_requirements,
-                    ADD COLUMN is_started BOOLEAN DEFAULT FALSE NOT NULL AFTER max_attendees,
-                    ADD COLUMN report_text VARCHAR(1000) AFTER max_attendees,
-                    ADD COLUMN is_report_submitted BOOLEAN DEFAULT FALSE NOT NULL AFTER report_text
-            """
-        )
-        migrate_attendees_to_table()
-        execute("ALTER TABLE circle_meeting_log DROP COLUMN attendees")
-        execute(
-            "UPDATE system_setting SET value = '1.55', updated_at = now() WHERE `key` = 'db.version';"
-        )
diff --git a/api/dashboard/ig/dash_ig_serializer.py b/api/dashboard/ig/dash_ig_serializer.py
index b32a7bc3..6b254f4e 100644
--- a/api/dashboard/ig/dash_ig_serializer.py
+++ b/api/dashboard/ig/dash_ig_serializer.py
@@ -9,7 +9,7 @@ class InterestGroupSerializer(serializers.ModelSerializer):
     updated_by = serializers.CharField(source='updated_by.full_name')
     created_by = serializers.CharField(source='created_by.full_name')
     members = serializers.SerializerMethodField()
-    category = serializers.ChoiceField(choices=["maker", "software", "creative", "management", "others"])
+    category = serializers.ChoiceField(choices=["hardware", "coder", "creative", "manager", "others"])
     class Meta:
         model = InterestGroup
         fields = [
diff --git a/api/dashboard/user/dash_user_serializer.py b/api/dashboard/user/dash_user_serializer.py
index c68b0314..d38d7d3e 100644
--- a/api/dashboard/user/dash_user_serializer.py
+++ b/api/dashboard/user/dash_user_serializer.py
@@ -387,7 +387,7 @@ class UserOrgLinkSerializer(serializers.ModelSerializer):
     department = serializers.PrimaryKeyRelatedField(
         queryset=Department.objects.all(), required=False
     )
-    graduation_year = serializers.CharField(required=False)
+    graduation_year = serializers.CharField(required=False,allow_null=True)
     organization = serializers.PrimaryKeyRelatedField(
         queryset=Organization.objects.all(), many=False, required=True
     )
diff --git a/api/register/serializers.py b/api/register/serializers.py
index 9067e639..59aca448 100644
--- a/api/register/serializers.py
+++ b/api/register/serializers.py
@@ -451,7 +451,7 @@ def update(self, instance, validated_data):
 
     def validate_choosen_interests(self, interests):
         if not all(
-            interest in ("maker", "software", "creative", "management", "others")
+            interest in ("hardware", "coder", "creative", "manager", "others")
             for interest in interests
         ):
             raise serializers.ValidationError("Invalid interests selected.")
@@ -465,6 +465,7 @@ def validate_choosen_endgoals(self, end_goals):
                 "higher_education",
                 "gig_work",
                 "entrepreneurship",
+                "r&d",
                 "others",
             )
             for goal in end_goals