diff --git a/database/db.connection.go b/database/db.connection.go
index 52f3705..89dd172 100644
--- a/database/db.connection.go
+++ b/database/db.connection.go
@@ -20,7 +20,7 @@ func InitDatabase(conf *config.DbConfig, isDebug bool) (db *gorm.DB, err error)
 		return nil, err
 	}
 
-	err = db.AutoMigrate(&model.Group{}, &model.User{}, &model.Selection{}, &model.Stamp{}, &model.CheckIn{}, &model.Count{})
+	err = db.AutoMigrate(&model.Group{}, &model.User{}, &model.Selection{}, &model.Stamp{}, &model.CheckIn{}, &model.Count{}, &model.Answer{})
 	if err != nil {
 		return nil, err
 	}
diff --git a/go.mod b/go.mod
index 1bfaf28..0c4ec78 100644
--- a/go.mod
+++ b/go.mod
@@ -5,8 +5,8 @@ go 1.22.4
 require (
 	github.com/golang/mock v1.6.0
 	github.com/google/uuid v1.6.0
-	github.com/isd-sgcu/rpkm67-go-proto v0.5.3
-	github.com/isd-sgcu/rpkm67-model v0.2.0
+	github.com/isd-sgcu/rpkm67-go-proto v0.5.4
+	github.com/isd-sgcu/rpkm67-model v0.2.1
 	github.com/joho/godotenv v1.5.1
 	github.com/redis/go-redis/v9 v9.5.3
 	github.com/stretchr/testify v1.9.0
diff --git a/go.sum b/go.sum
index b3da297..3833e07 100644
--- a/go.sum
+++ b/go.sum
@@ -27,6 +27,8 @@ github.com/isd-sgcu/rpkm67-go-proto v0.5.2 h1:CP9oXIa4MrJZd6ynHkVt18YPGlQU0bkDM1
 github.com/isd-sgcu/rpkm67-go-proto v0.5.2/go.mod h1:w+UCeQnJ3wBuJ7Tyf8LiBiPZVb1KlecjMNCB7kBeL7M=
 github.com/isd-sgcu/rpkm67-go-proto v0.5.3 h1:DMxo3vu5OB2RaODWQwIIFRTyPEyTNMvwmfDbVmVnmnM=
 github.com/isd-sgcu/rpkm67-go-proto v0.5.3/go.mod h1:w+UCeQnJ3wBuJ7Tyf8LiBiPZVb1KlecjMNCB7kBeL7M=
+github.com/isd-sgcu/rpkm67-go-proto v0.5.4 h1:XcbTKhQFGHiFf10kxsoK8oyZ2v1b2uQ2gmOmzI5sEYE=
+github.com/isd-sgcu/rpkm67-go-proto v0.5.4/go.mod h1:w+UCeQnJ3wBuJ7Tyf8LiBiPZVb1KlecjMNCB7kBeL7M=
 github.com/isd-sgcu/rpkm67-model v0.0.6 h1:pYlqOmeXGQIfHdOhyAta4kXkqnoLc4X3KWcAjPrAuds=
 github.com/isd-sgcu/rpkm67-model v0.0.6/go.mod h1:dxgLSkrFpbQOXsrzqgepZoEOyZUIG2LBGtm5gsuBbVc=
 github.com/isd-sgcu/rpkm67-model v0.0.7 h1:3b8gf1Ocg+Ky4xocKtCqVCB3rFDg90IgEXRwNmHt0OE=
@@ -35,6 +37,8 @@ github.com/isd-sgcu/rpkm67-model v0.1.0 h1:ML4C8cU7L8m53QuAiIkrykzQP9VYlsOWGrQO5
 github.com/isd-sgcu/rpkm67-model v0.1.0/go.mod h1:dxgLSkrFpbQOXsrzqgepZoEOyZUIG2LBGtm5gsuBbVc=
 github.com/isd-sgcu/rpkm67-model v0.2.0 h1:D2KytmevtV9/3FwfA7FiKo2UKa3jC8knZI97vwRuboA=
 github.com/isd-sgcu/rpkm67-model v0.2.0/go.mod h1:dxgLSkrFpbQOXsrzqgepZoEOyZUIG2LBGtm5gsuBbVc=
+github.com/isd-sgcu/rpkm67-model v0.2.1 h1:O6mZeZqDjGbiEJa5zzbf6cVwz4uVOtQTuAxnkLj+2oQ=
+github.com/isd-sgcu/rpkm67-model v0.2.1/go.mod h1:dxgLSkrFpbQOXsrzqgepZoEOyZUIG2LBGtm5gsuBbVc=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
 github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a h1:bbPeKD0xmW/Y25WS6cokEszi5g+S0QxI/d45PkRi7Nk=
diff --git a/internal/stamp/stamp.repository.go b/internal/stamp/stamp.repository.go
index 228ea54..d00f162 100644
--- a/internal/stamp/stamp.repository.go
+++ b/internal/stamp/stamp.repository.go
@@ -8,6 +8,7 @@ import (
 type Repository interface {
 	FindByUserId(userId string, stamp *model.Stamp) error
 	StampByUserId(userId string, stamp *model.Stamp) error
+	CreateAnswer(answer *model.Answer) error
 }
 
 type repositoryImpl struct {
@@ -27,3 +28,7 @@ func (r *repositoryImpl) FindByUserId(userId string, stamp *model.Stamp) error {
 func (r *repositoryImpl) StampByUserId(userId string, stamp *model.Stamp) error {
 	return r.Db.Model(stamp).Where("user_id = ?", userId).Updates(stamp).Error
 }
+
+func (r *repositoryImpl) CreateAnswer(answer *model.Answer) error {
+	return r.Db.Create(answer).Error
+}
diff --git a/internal/stamp/stamp.service.go b/internal/stamp/stamp.service.go
index 2606790..3412e89 100644
--- a/internal/stamp/stamp.service.go
+++ b/internal/stamp/stamp.service.go
@@ -53,12 +53,23 @@ func (s *serviceImpl) StampByUserId(_ context.Context, in *proto.StampByUserIdRe
 
 	actIdx, ok := s.activityIdToIdx[in.ActivityId]
 	if !ok {
-		return nil, status.Error(codes.Internal, errors.New("Invalid Activity ID").Error())
+		return nil, status.Error(codes.Internal, errors.New("invalid Activity ID").Error())
 	}
 
 	tempStrStamp := []byte(stamp.Stamp)
 	if tempStrStamp[actIdx] == '1' {
-		return nil, status.Error(codes.Internal, errors.New("Already stamped").Error())
+		return nil, status.Error(codes.Internal, errors.New("already stamped").Error())
+	}
+
+	if actIdx >= 9 {
+		ans := &model.Answer{
+			ActivityID: in.ActivityId,
+			Text:       in.Answer,
+		}
+		if err := s.repo.CreateAnswer(ans); err != nil {
+			s.log.Named("StampByUserId").Error("CreateAnswer", zap.Error(err))
+			return nil, status.Error(codes.Internal, err.Error())
+		}
 	}
 
 	tempStrStamp[actIdx] = '1'