diff --git a/Common/Extension/EnkaHSRImpl.swift b/Common/Extension/EnkaHSRImpl.swift
index 6d7509e4..4638f522 100644
--- a/Common/Extension/EnkaHSRImpl.swift
+++ b/Common/Extension/EnkaHSRImpl.swift
@@ -5,7 +5,13 @@
 import EnkaKitHSR
 import Foundation
 
-extension EnkaHSR.QueryRelated.Exception: LocalizedError {
+#if hasFeature(RetroactiveAttribute)
+extension EnkaHSR.QueryRelated.Exception: @retroactive LocalizedError {}
+#else
+extension EnkaHSR.QueryRelated.Exception: LocalizedError {}
+#endif
+
+extension EnkaHSR.QueryRelated.Exception {
     public var errorDescription: String? {
         switch self {
         case let .enkaDBOnlineFetchFailure(details: details):
diff --git a/Common/Extension/MiHoYoAPIError+LocalizedError.swift b/Common/Extension/MiHoYoAPIError+LocalizedError.swift
index a01925c1..ce9b07f0 100644
--- a/Common/Extension/MiHoYoAPIError+LocalizedError.swift
+++ b/Common/Extension/MiHoYoAPIError+LocalizedError.swift
@@ -8,7 +8,13 @@
 import Foundation
 import HBMihoyoAPI
 
-extension MiHoYoAPIError: LocalizedError {
+#if hasFeature(RetroactiveAttribute)
+extension MiHoYoAPIError: @retroactive LocalizedError {}
+#else
+extension MiHoYoAPIError: LocalizedError {}
+#endif
+
+extension MiHoYoAPIError {
     public var errorDescription: String? {
         switch self {
         case let .other(retcode: retcode, message: message):
diff --git a/Features/Daily Note/View/InAppDailyNoteCardView.swift b/Features/Daily Note/View/InAppDailyNoteCardView.swift
index 97f1578a..73a70097 100644
--- a/Features/Daily Note/View/InAppDailyNoteCardView.swift	
+++ b/Features/Daily Note/View/InAppDailyNoteCardView.swift	
@@ -154,7 +154,13 @@ private struct NoteView: View {
 
 // MARK: - ExpeditionInformation.Expedition + View
 
-extension ExpeditionInformation.Expedition: View {
+#if hasFeature(RetroactiveAttribute)
+extension ExpeditionInformation.Expedition: @retroactive View {}
+#else
+extension ExpeditionInformation.Expedition: View {}
+#endif
+
+extension ExpeditionInformation.Expedition {
     public var body: some View {
         HStack(alignment: .center) {
             VStack(alignment: .center, spacing: 4) {
diff --git a/Features/Gacha/Model/GachaRelatedDescriptionExtension.swift b/Features/Gacha/Model/GachaRelatedDescriptionExtension.swift
index c8a2573e..b47c2655 100644
--- a/Features/Gacha/Model/GachaRelatedDescriptionExtension.swift
+++ b/Features/Gacha/Model/GachaRelatedDescriptionExtension.swift
@@ -10,7 +10,13 @@ import HBMihoyoAPI
 
 // MARK: - GachaError + LocalizedError
 
-extension GachaError: LocalizedError {
+#if hasFeature(RetroactiveAttribute)
+extension GachaError: @retroactive LocalizedError {}
+#else
+extension GachaError: LocalizedError {}
+#endif
+
+extension GachaError {
     public var errorDescription: String? {
         switch self {
         case let .fetchDataError(page: page, size: size, gachaType: gachaType, error: error):
@@ -28,7 +34,13 @@ extension GachaError: LocalizedError {
 
 // MARK: - ParseGachaURLError + LocalizedError
 
-extension ParseGachaURLError: LocalizedError {
+#if hasFeature(RetroactiveAttribute)
+extension ParseGachaURLError: @retroactive LocalizedError {}
+#else
+extension ParseGachaURLError: LocalizedError {}
+#endif
+
+extension ParseGachaURLError {
     public var errorDescription: String? {
         switch self {
         case .invalidURL:
@@ -49,7 +61,13 @@ extension ParseGachaURLError: LocalizedError {
 
 // MARK: - GachaType + CustomStringConvertible
 
-extension GachaType: CustomStringConvertible {
+#if hasFeature(RetroactiveAttribute)
+extension GachaType: @retroactive CustomStringConvertible {}
+#else
+extension GachaType: CustomStringConvertible {}
+#endif
+
+extension GachaType {
     public var description: String {
         switch self {
         case .characterEventWarp:
@@ -66,7 +84,13 @@ extension GachaType: CustomStringConvertible {
 
 // MARK: - GachaItem.ItemType + CustomStringConvertible
 
-extension GachaItem.ItemType: CustomStringConvertible {
+#if hasFeature(RetroactiveAttribute)
+extension GachaItem.ItemType: @retroactive CustomStringConvertible {}
+#else
+extension GachaItem.ItemType: CustomStringConvertible {}
+#endif
+
+extension GachaItem.ItemType {
     public var description: String {
         switch self {
         case .lightCones:
diff --git a/HSRPizzaHelper.xcodeproj/project.pbxproj b/HSRPizzaHelper.xcodeproj/project.pbxproj
index 9139c338..1689ddac 100644
--- a/HSRPizzaHelper.xcodeproj/project.pbxproj
+++ b/HSRPizzaHelper.xcodeproj/project.pbxproj
@@ -1981,7 +1981,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 6.0;
 			};
 			name = Debug;
 		};
@@ -2038,7 +2038,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_COMPILATION_MODE = wholemodule;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 6.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
diff --git a/Packages/EnkaKitHSR/Sources/EnkaSwiftUIViews/ShowCaseListView.swift b/Packages/EnkaKitHSR/Sources/EnkaSwiftUIViews/ShowCaseListView.swift
index 2a46d40b..4d00b997 100644
--- a/Packages/EnkaKitHSR/Sources/EnkaSwiftUIViews/ShowCaseListView.swift
+++ b/Packages/EnkaKitHSR/Sources/EnkaSwiftUIViews/ShowCaseListView.swift
@@ -150,7 +150,13 @@ public struct ShowCaseListView: View {
 
 // MARK: - Int + Identifiable
 
-extension Int: Identifiable {
+#if hasFeature(RetroactiveAttribute)
+extension Int: @retroactive Identifiable {}
+#else
+extension Int: Identifiable {}
+#endif
+
+extension Int {
     public var id: String { description }
 }
 
diff --git a/Packages/NewsKitHSR/Sources/NewsKitHSR/Views/NewsView.swift b/Packages/NewsKitHSR/Sources/NewsKitHSR/Views/NewsView.swift
index 46af737a..2faba705 100644
--- a/Packages/NewsKitHSR/Sources/NewsKitHSR/Views/NewsView.swift
+++ b/Packages/NewsKitHSR/Sources/NewsKitHSR/Views/NewsView.swift
@@ -50,7 +50,13 @@ extension NewsKitHSR {
 
 // MARK: - View + View
 
-extension [any NewsKitHSR.NewsElement]: View {
+#if hasFeature(RetroactiveAttribute)
+extension [any NewsKitHSR.NewsElement]: @retroactive View {}
+#else
+extension [any NewsKitHSR.NewsElement]: View {}
+#endif
+
+extension [any NewsKitHSR.NewsElement] {
     public var body: some View {
         List {
             ForEach(self, id: \.id) { newsElement in