diff --git a/Libraries/Sources/APIService/Enumerations/ResponseStatus.swift b/Libraries/Sources/APIService/Enumerations/ResponseStatus.swift
index 8d09e02..0895820 100644
--- a/Libraries/Sources/APIService/Enumerations/ResponseStatus.swift
+++ b/Libraries/Sources/APIService/Enumerations/ResponseStatus.swift
@@ -11,6 +11,7 @@ enum ResponseStatus: Int {
     case created = 201
     case noContent = 204
     case badRequest = 400
+    case unauthorized = 401
     case forbidden = 403
     case notFound = 404
 }
diff --git a/Libraries/Sources/APIService/Structs/APIClient.swift b/Libraries/Sources/APIService/Structs/APIClient.swift
index 2397fd3..ca7c67f 100644
--- a/Libraries/Sources/APIService/Structs/APIClient.swift
+++ b/Libraries/Sources/APIService/Structs/APIClient.swift
@@ -50,7 +50,8 @@ extension APIClient: Client {
             throw APIClientError.notSupported
         case .badRequest:
             throw APIClientError.itemAlreadyExist
-        case .forbidden:
+        case .unauthorized,
+             .forbidden:
             throw APIClientError.authenticationFailed
         case .notFound:
             throw APIClientError.itemDoesNotExist
@@ -79,7 +80,8 @@ extension APIClient: Client {
             throw APIClientError.notSupported
         case .badRequest:
             throw APIClientError.itemIsNotFile
-        case .forbidden:
+        case .unauthorized,
+             .forbidden:
             throw APIClientError.authenticationFailed
         case .notFound:
             throw APIClientError.itemDoesNotExist
diff --git a/Libraries/Tests/APIServiceTests/Cases/Structs/APIClient+RequestTests.swift b/Libraries/Tests/APIServiceTests/Cases/Structs/APIClient+RequestTests.swift
index 2c2e977..40851f0 100644
--- a/Libraries/Tests/APIServiceTests/Cases/Structs/APIClient+RequestTests.swift
+++ b/Libraries/Tests/APIServiceTests/Cases/Structs/APIClient+RequestTests.swift
@@ -157,6 +157,31 @@ final class APIClientRequestTests: XCTestCase {
         }
     }
     
+    func test_withSomeEndpoint_andSomeModel_whenResponseStatusUnauthorized() async throws {
+        // GIVEN
+        let endpoint = GetMeEndpoint(
+            username: "username",
+            password: "password"
+        )
+        
+        url = try makeURLRequest(endpoint: endpoint).url
+        
+        MockURLProtocol.mockData[url] = MockURLResponse(
+            status: .unauthorized,
+            headers: [:],
+            data: nil
+        )
+        
+        // WHEN & THEN
+        do {
+            _ = try await client.request(endpoint: endpoint, model: Me.self)
+        } catch APIClientError.authenticationFailed {
+            XCTAssertTrue(true)
+        } catch {
+            XCTAssertTrue(false)
+        }
+    }
+    
     func test_withSomeEndpoint_andSomeModel_whenResponseStatusForbidden() async throws {
         // GIVEN
         let endpoint = GetMeEndpoint(
@@ -333,6 +358,32 @@ final class APIClientRequestTests: XCTestCase {
         }
     }
     
+    func test_withSomeEndpoint_whenResponseStatusUnauthorized() async throws {
+        // GIVEN
+        let endpoint = GetDataEndpoint(
+            itemId: UUID().uuidString,
+            username: "username",
+            password: "password"
+        )
+        
+        url = try makeURLRequest(endpoint: endpoint).url
+        
+        MockURLProtocol.mockData[url] = MockURLResponse(
+            status: .unauthorized,
+            headers: [:],
+            data: nil
+        )
+        
+        // WHEN & THEN
+        do {
+            try await client.request(endpoint: endpoint)
+        } catch APIClientError.authenticationFailed {
+            XCTAssertTrue(true)
+        } catch {
+            XCTAssertTrue(false)
+        }
+    }
+    
     func test_withSomeEndpoint_whenResponseStatusForbidden() async throws {
         // GIVEN
         let endpoint = GetDataEndpoint(