diff --git a/DSKit/Sources/DSKit/Appearances/BlueAppearance.swift b/DSKit/Sources/DSKit/Appearances/BlueAppearance.swift
index 232a66c..e229563 100644
--- a/DSKit/Sources/DSKit/Appearances/BlueAppearance.swift
+++ b/DSKit/Sources/DSKit/Appearances/BlueAppearance.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2021 Borinschi Ivan. All rights reserved.
 //
 
+import Foundation
+
 public class BlueAppearance: DSAppearance {
     
     public var title: String
diff --git a/DSKit/Sources/DSKit/Appearances/DSKitAppearance.swift b/DSKit/Sources/DSKit/Appearances/DSKitAppearance.swift
index 8278088..35f055a 100644
--- a/DSKit/Sources/DSKit/Appearances/DSKitAppearance.swift
+++ b/DSKit/Sources/DSKit/Appearances/DSKitAppearance.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2021 Borinschi Ivan. All rights reserved.
 //
 
+import Foundation
+
 public struct LightBlueAppearance: DSAppearance {
     
     public var title: String
diff --git a/DSKit/Sources/DSKit/Appearances/DarkAppearance.swift b/DSKit/Sources/DSKit/Appearances/DarkAppearance.swift
index 702fa81..17bb81d 100644
--- a/DSKit/Sources/DSKit/Appearances/DarkAppearance.swift
+++ b/DSKit/Sources/DSKit/Appearances/DarkAppearance.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2021 Borinschi Ivan. All rights reserved.
 //
 
+import Foundation
+
 public class DarkAppearance: DSAppearance {
     
     public var title: String
diff --git a/DSKit/Sources/DSKit/Appearances/PeachAppearance.swift b/DSKit/Sources/DSKit/Appearances/PeachAppearance.swift
index a312ec0..9ea9fee 100644
--- a/DSKit/Sources/DSKit/Appearances/PeachAppearance.swift
+++ b/DSKit/Sources/DSKit/Appearances/PeachAppearance.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2021 Borinschi Ivan. All rights reserved.
 //
 
+import Foundation
+
 public class PeachAppearance: DSAppearance {
     
     public var title: String
diff --git a/DSKit/Sources/DSKit/Appearances/RetroAppearance.swift b/DSKit/Sources/DSKit/Appearances/RetroAppearance.swift
index eaabe07..26d91d9 100644
--- a/DSKit/Sources/DSKit/Appearances/RetroAppearance.swift
+++ b/DSKit/Sources/DSKit/Appearances/RetroAppearance.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2021 Borinschi Ivan. All rights reserved.
 //
 
+import Foundation
+
 public final class RetroAppearance: DSAppearance {
     
     public var title: String