diff --git a/src/main/java/com/gamzabat/algohub/feature/group/studygroup/domain/GroupMember.java b/src/main/java/com/gamzabat/algohub/feature/group/studygroup/domain/GroupMember.java
index ca9a2186..4ec86f55 100644
--- a/src/main/java/com/gamzabat/algohub/feature/group/studygroup/domain/GroupMember.java
+++ b/src/main/java/com/gamzabat/algohub/feature/group/studygroup/domain/GroupMember.java
@@ -2,6 +2,8 @@
 
 import java.time.LocalDate;
 
+import org.hibernate.annotations.DynamicUpdate;
+
 import com.gamzabat.algohub.feature.group.studygroup.etc.RoleOfGroupMember;
 import com.gamzabat.algohub.feature.user.domain.User;
 
@@ -22,6 +24,7 @@
 @Entity
 @Getter
 @NoArgsConstructor
+@DynamicUpdate
 public class GroupMember {
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
diff --git a/src/main/java/com/gamzabat/algohub/feature/group/studygroup/service/StudyGroupService.java b/src/main/java/com/gamzabat/algohub/feature/group/studygroup/service/StudyGroupService.java
index 532b47f3..f4e348a7 100644
--- a/src/main/java/com/gamzabat/algohub/feature/group/studygroup/service/StudyGroupService.java
+++ b/src/main/java/com/gamzabat/algohub/feature/group/studygroup/service/StudyGroupService.java
@@ -509,6 +509,10 @@ public void updateGroupMemberRole(User user, Long groupId, UpdateGroupMemberRole
 				() -> new GroupMemberValidationException(HttpStatus.BAD_REQUEST.value(), "해당 스터디 그룹에 참여하지 않은 회원입니다."));
 
 		member.updateRole(RoleOfGroupMember.fromValue(request.role()));
+
+		if (RoleOfGroupMember.isOwner(member)) {
+			owner.updateRole(RoleOfGroupMember.PARTICIPANT);
+		}
 		log.info("success to update group member role");
 	}
 
diff --git a/src/test/java/com/gamzabat/algohub/service/StudyGroupServiceTest.java b/src/test/java/com/gamzabat/algohub/service/StudyGroupServiceTest.java
index aaf328f4..e13db428 100644
--- a/src/test/java/com/gamzabat/algohub/service/StudyGroupServiceTest.java
+++ b/src/test/java/com/gamzabat/algohub/service/StudyGroupServiceTest.java
@@ -604,7 +604,7 @@ void updateBookmarkedStudyGroupFailed_2() {
 
 	@Test
 	@DisplayName("스터디 그룹 멤버 역할 수정 성공")
-	void updateGroupMemberRole() {
+	void updateGroupMemberRole_1() {
 		// given
 		UpdateGroupMemberRoleRequest request = new UpdateGroupMemberRoleRequest(2L, "ADMIN");
 		when(groupMemberRepository.findByUserAndStudyGroup(user, group)).thenReturn(Optional.ofNullable(groupMember1));
@@ -619,6 +619,24 @@ void updateGroupMemberRole() {
 		assertThat(groupMember2.getRole()).isEqualTo(RoleOfGroupMember.ADMIN);
 	}
 
+	@Test
+	@DisplayName("스터디 그룹 멤버 역할 수정 성공 : OWNER로 수정")
+	void updateGroupMemberRole_2() {
+		// given
+		UpdateGroupMemberRoleRequest request = new UpdateGroupMemberRoleRequest(2L, "OWNER");
+		when(groupMemberRepository.findByUserAndStudyGroup(user, group)).thenReturn(Optional.ofNullable(groupMember1));
+		when(groupMemberRepository.findByUserAndStudyGroup(user2, group)).thenReturn(Optional.ofNullable(groupMember2));
+		when(studyGroupRepository.findById(groupId)).thenReturn(Optional.ofNullable(group));
+		when(userRepository.findById(anyLong())).thenReturn(Optional.ofNullable(user2));
+		// when
+		studyGroupService.updateGroupMemberRole(user, groupId, request);
+		// then
+		assertThat(groupMember2.getUser()).isEqualTo(user2);
+		assertThat(groupMember2.getStudyGroup()).isEqualTo(group);
+		assertThat(groupMember2.getRole()).isEqualTo(RoleOfGroupMember.OWNER);
+		assertThat(groupMember1.getRole()).isEqualTo(RoleOfGroupMember.PARTICIPANT);
+	}
+
 	@Test
 	@DisplayName("스터디 그룹 멤버 역할 수정 실패 : 존재하지 않는 그룹")
 	void updateGroupMemberRoleFailed_1() {