diff --git a/module-api/src/main/java/kernel/jdon/coffeechat/service/CoffeeChatService.java b/module-api/src/main/java/kernel/jdon/coffeechat/service/CoffeeChatService.java
index 98a9104f9..1147d974b 100644
--- a/module-api/src/main/java/kernel/jdon/coffeechat/service/CoffeeChatService.java
+++ b/module-api/src/main/java/kernel/jdon/coffeechat/service/CoffeeChatService.java
@@ -50,12 +50,12 @@ private void increaseViewCount(CoffeeChat coffeeChat) {
 		coffeeChat.increaseViewCount();
 	}
 
-	public CustomPageResponse<FindCoffeeChatListResponse> findHostCoffeeChatList(Long memberId, Pageable pageable) {
+	public CustomPageResponse findHostCoffeeChatList(Long memberId, Pageable pageable) {
 		Page<FindCoffeeChatListResponse> findCoffeeChatPage = coffeeChatRepository.findAllByMemberIdAndIsDeletedFalse(
 				memberId, pageable)
 			.map(FindCoffeeChatListResponse::of);
 
-		return new CustomPageResponse<>(findCoffeeChatPage);
+		return CustomPageResponse.of(findCoffeeChatPage);
 	}
 
 	@Transactional
diff --git a/module-api/src/main/java/kernel/jdon/config/auth/OAuth2SecurityConfig.java b/module-api/src/main/java/kernel/jdon/config/auth/OAuth2SecurityConfig.java
index 54883d383..6e87e7372 100644
--- a/module-api/src/main/java/kernel/jdon/config/auth/OAuth2SecurityConfig.java
+++ b/module-api/src/main/java/kernel/jdon/config/auth/OAuth2SecurityConfig.java
@@ -27,7 +27,7 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
 
 		http.cors(corsCustomizer -> corsCustomizer.configurationSource(request -> {
 			CorsConfiguration config = new CorsConfiguration();
-			config.setAllowedOrigins(List.of("http://localhost:3000"));
+			config.setAllowedOrigins(List.of("http://localhost:3000", "https://peaceful-sopapillas-36c089.netlify.app"));
 			config.setAllowedMethods(List.of("GET", "POST", "PUT", "DELETE"));
 			config.setAllowedHeaders(List.of("*"));
 			config.setMaxAge(3600L);
diff --git a/module-api/src/main/java/kernel/jdon/favorite/service/FavoriteService.java b/module-api/src/main/java/kernel/jdon/favorite/service/FavoriteService.java
index 9da841933..1035298ac 100644
--- a/module-api/src/main/java/kernel/jdon/favorite/service/FavoriteService.java
+++ b/module-api/src/main/java/kernel/jdon/favorite/service/FavoriteService.java
@@ -40,10 +40,16 @@ public UpdateFavoriteResponse create(Long memberId, UpdateFavoriteRequest update
 		InflearnCourse findInflearnCourse = inflearnCourseRepository.findById(
 				updateFavoriteRequest.getLectureId())
 			.orElseThrow(() -> new ApiException(InflearncourseErrorCode.NOT_FOUND_INFLEARN_COURSE));
+		
+		return favoriteRepository.findFavoriteByMemberIdAndInflearnCourseId(memberId,
+				updateFavoriteRequest.getLectureId())
+			.map(favorite -> UpdateFavoriteResponse.of(favorite.getId()))
+			.orElseGet(() -> createNewFavorite(findMember, findInflearnCourse));
+	}
 
-		Favorite favorite = new Favorite(findMember, findInflearnCourse);
+	private UpdateFavoriteResponse createNewFavorite(Member member, InflearnCourse inflearnCourse) {
+		Favorite favorite = new Favorite(member, inflearnCourse);
 		Favorite savedFavorite = favoriteRepository.save(favorite);
-
 		return UpdateFavoriteResponse.of(savedFavorite.getId());
 	}
 
diff --git a/module-api/src/main/java/kernel/jdon/global/page/CustomPageResponse.java b/module-api/src/main/java/kernel/jdon/global/page/CustomPageResponse.java
index c1edc7005..8d5584668 100644
--- a/module-api/src/main/java/kernel/jdon/global/page/CustomPageResponse.java
+++ b/module-api/src/main/java/kernel/jdon/global/page/CustomPageResponse.java
@@ -5,21 +5,22 @@
 
 import org.springframework.data.domain.Page;
 
+import lombok.AllArgsConstructor;
 import lombok.Getter;
 
 @Getter
+@AllArgsConstructor
 public class CustomPageResponse<T> {
 
 	private List<T> content;
 	private PageInfo pageInfo;
 
-	public CustomPageResponse(Page<T> page) {
-		this.content = page.getContent();
-		this.pageInfo = new PageInfo(page);
+	public static CustomPageResponse of(Page page) {
+		return new CustomPageResponse(page.getContent(), new PageInfo(page));
 	}
 
 	@Getter
-	public class PageInfo implements Serializable {
+	public static class PageInfo implements Serializable {
 
 		private Integer pageNumber;
 		private Integer pageSize;
diff --git a/module-domain/src/main/java/kernel/jdon/skillhistory/domain/SkillHistory.java b/module-domain/src/main/java/kernel/jdon/skillhistory/domain/SkillHistory.java
index 3c6a65afe..c72b3c8dd 100644
--- a/module-domain/src/main/java/kernel/jdon/skillhistory/domain/SkillHistory.java
+++ b/module-domain/src/main/java/kernel/jdon/skillhistory/domain/SkillHistory.java
@@ -9,7 +9,6 @@
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
 import jakarta.persistence.Table;
-import jakarta.persistence.UniqueConstraint;
 import kernel.jdon.jobcategory.domain.JobCategory;
 import kernel.jdon.wantedjd.domain.WantedJd;
 import lombok.AccessLevel;
@@ -20,10 +19,7 @@
 @Entity
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-@Table(name = "skill_history",
-	uniqueConstraints = {
-		@UniqueConstraint(columnNames = {"job_category_id", "wanted_jd_id", "keyword"})
-	})
+@Table(name = "skill_history")
 public class SkillHistory {
 	@Id
 	@GeneratedValue(strategy = GenerationType.IDENTITY)