diff --git a/Libraries/Sources/APIService/Endpoints/DeleteItemEndpoint.swift b/Libraries/Sources/APIService/Endpoints/DeleteItemEndpoint.swift
index 7ada098..f5b44c7 100644
--- a/Libraries/Sources/APIService/Endpoints/DeleteItemEndpoint.swift
+++ b/Libraries/Sources/APIService/Endpoints/DeleteItemEndpoint.swift
@@ -6,12 +6,14 @@
 //  Copyright © 2022 Röck+Cöde. All rights reserved.
 //
 
+import Foundation
+
 struct DeleteItemEndpoint: Endpoint {
     let path: String
     let method: RequestMethod
     let credentials: BasicCredentials
     let headers: [String : String]
-    let body: [String : String]?
+    let body: Data?
 }
 
 // MARK: - Initialisers
diff --git a/Libraries/Sources/APIService/Endpoints/GetDataEndpoint.swift b/Libraries/Sources/APIService/Endpoints/GetDataEndpoint.swift
index c21bdf2..026bedd 100644
--- a/Libraries/Sources/APIService/Endpoints/GetDataEndpoint.swift
+++ b/Libraries/Sources/APIService/Endpoints/GetDataEndpoint.swift
@@ -6,12 +6,14 @@
 //  Copyright © 2022 Röck+Cöde. All rights reserved.
 //
 
+import Foundation
+
 struct GetDataEndpoint: Endpoint {
     let path: String
     let method: RequestMethod
     let credentials: BasicCredentials
     let headers: [String : String]
-    let body: [String : String]?
+    let body: Data?
 }
 
 // MARK: - Initialisers
diff --git a/Libraries/Sources/APIService/Endpoints/GetItemsEndpoint.swift b/Libraries/Sources/APIService/Endpoints/GetItemsEndpoint.swift
index c60b263..6e74867 100644
--- a/Libraries/Sources/APIService/Endpoints/GetItemsEndpoint.swift
+++ b/Libraries/Sources/APIService/Endpoints/GetItemsEndpoint.swift
@@ -6,12 +6,14 @@
 //  Copyright © 2022 Röck+Cöde. All rights reserved.
 //
 
+import Foundation
+
 struct GetItemsEndpoint: Endpoint {
     let path: String
     let method: RequestMethod
     let credentials: BasicCredentials
     let headers: [String : String]
-    let body: [String : String]?
+    let body: Data?
 }
 
 // MARK: - Initialisers
diff --git a/Libraries/Sources/APIService/Endpoints/GetMeEndpoint.swift b/Libraries/Sources/APIService/Endpoints/GetMeEndpoint.swift
index c2ff363..7dbd729 100644
--- a/Libraries/Sources/APIService/Endpoints/GetMeEndpoint.swift
+++ b/Libraries/Sources/APIService/Endpoints/GetMeEndpoint.swift
@@ -6,12 +6,14 @@
 //  Copyright © 2022 Röck+Cöde. All rights reserved.
 //
 
+import Foundation
+
 struct GetMeEndpoint: Endpoint {
     let path: String
     let method: RequestMethod
     let credentials: BasicCredentials
     let headers: [String : String]
-    let body: [String : String]?
+    let body: Data?
 }
 
 // MARK: - Initialisers
diff --git a/Libraries/Sources/APIService/Protocols/Endpoint.swift b/Libraries/Sources/APIService/Protocols/Endpoint.swift
index af12ed8..bac6dfa 100644
--- a/Libraries/Sources/APIService/Protocols/Endpoint.swift
+++ b/Libraries/Sources/APIService/Protocols/Endpoint.swift
@@ -6,6 +6,8 @@
 //  Copyright © 2022 Röck+Cöde. All rights reserved.
 //
 
+import Foundation
+
 protocol Endpoint {
     var scheme: String { get }
     var host: String { get }
@@ -13,7 +15,7 @@ protocol Endpoint {
     var method: RequestMethod { get }
     var credentials: BasicCredentials { get }
     var headers: [String: String] { get }
-    var body: [String: String]? { get }
+    var body: Data? { get }
 }
 
 // MARK: - Defaults
diff --git a/Libraries/Tests/APIServiceTests/Cases/Endpoints/DeleteItemEndpoint+InitTests.swift b/Libraries/Tests/APIServiceTests/Cases/Endpoints/DeleteItemEndpoint+InitTests.swift
index 77c888c..6382881 100644
--- a/Libraries/Tests/APIServiceTests/Cases/Endpoints/DeleteItemEndpoint+InitTests.swift
+++ b/Libraries/Tests/APIServiceTests/Cases/Endpoints/DeleteItemEndpoint+InitTests.swift
@@ -47,7 +47,7 @@ final class DeleteItemEndpoint_InitTests: XCTestCase {
         XCTAssertNil(endpoint.body)
     }
     
-    func test_withItemId_andEmptyUsernameOrPassword() async throws {
+    func test_withItemId_andEmptyUsernameOrPassword() throws {
         // GIVEN
         username = ""
         password = "password"
diff --git a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetDataEndpoint+InitTests.swift b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetDataEndpoint+InitTests.swift
index 3803111..23885cf 100644
--- a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetDataEndpoint+InitTests.swift
+++ b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetDataEndpoint+InitTests.swift
@@ -47,7 +47,7 @@ final class GetDataEndpointInitTests: XCTestCase {
         XCTAssertNil(endpoint.body)
     }
     
-    func test_withItemId_andEmptyUsernameOrPassword() async throws {
+    func test_withItemId_andEmptyUsernameOrPassword() throws {
         // GIVEN
         username = ""
         password = "password"
diff --git a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetItemsEndpoint+InitTests.swift b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetItemsEndpoint+InitTests.swift
index 1834a34..1e7a2f1 100644
--- a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetItemsEndpoint+InitTests.swift
+++ b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetItemsEndpoint+InitTests.swift
@@ -47,7 +47,7 @@ final class GetItemsEndpointInitTests: XCTestCase {
         XCTAssertNil(endpoint.body)
     }
     
-    func test_withItemId_andEmptyUsernameOrPassword() async throws {
+    func test_withItemId_andEmptyUsernameOrPassword() throws {
         // GIVEN
         username = ""
         password = "password"
diff --git a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetMeEndpoint+InitTests.swift b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetMeEndpoint+InitTests.swift
index 9befdf0..ddd722e 100644
--- a/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetMeEndpoint+InitTests.swift
+++ b/Libraries/Tests/APIServiceTests/Cases/Endpoints/GetMeEndpoint+InitTests.swift
@@ -40,7 +40,7 @@ final class GetMeEndpointInitTests: XCTestCase {
         XCTAssertNil(endpoint.body)
     }
     
-    func test_withEmptyUsernameOrPassword() async throws {
+    func test_withEmptyUsernameOrPassword() throws {
         // GIVEN
         username = ""
         password = "password"