diff --git a/README.md b/README.md
index fb2ee2a..d455b01 100644
--- a/README.md
+++ b/README.md
@@ -322,7 +322,7 @@ import PackageDescription
 let package = Package(
   name: "SomeProject",
   dependencies: [
-    .package(url: "https://github.com/dankinsoid/swift-api-client.git", from: "1.1.2")
+    .package(url: "https://github.com/dankinsoid/swift-api-client.git", from: "1.1.3")
   ],
   targets: [
     .target(
diff --git a/Sources/SwiftAPIClient/APIClient.swift b/Sources/SwiftAPIClient/APIClient.swift
index 3a3654b..a9af65e 100644
--- a/Sources/SwiftAPIClient/APIClient.swift
+++ b/Sources/SwiftAPIClient/APIClient.swift
@@ -142,6 +142,11 @@ public struct APIClient {
 		return try await operation(configs)
 	}
 
+    /// Modifies the client using the provided closure.
+    public func modifier(_ modifier: (Self) throws -> Self) rethrows -> Self {
+        try modifier(self)
+    }
+
 	private func createRequest() throws -> (HTTPRequest, Configs) {
 		var configs = Configs()
 		let client = Self.globalModifier(self)
diff --git a/Sources/SwiftAPIClient/Modifiers/RequestModifiers.swift b/Sources/SwiftAPIClient/Modifiers/RequestModifiers.swift
index 3cb29e9..4609273 100644
--- a/Sources/SwiftAPIClient/Modifiers/RequestModifiers.swift
+++ b/Sources/SwiftAPIClient/Modifiers/RequestModifiers.swift
@@ -106,6 +106,21 @@ public extension APIClient {
 	func header(_ field: HTTPField.Name, _ value: String, removeCurrent: Bool = false) -> APIClient {
 		headers(HTTPField(name: field, value: value), removeCurrent: removeCurrent)
 	}
+    
+    /// Adds or updates a specific HTTP header for the request.
+    /// - Parameters:
+    ///   - field: The key of the header to add or update.
+    ///   - value: The value for the header.
+    ///   - update: A Boolean to determine whether to remove the current header if it exists. Default is `false`.
+    /// - Returns: An instance of `APIClient` with modified header.
+    @_disfavoredOverload
+    func header(_ field: HTTPField.Name, _ value: CustomStringConvertible?, removeCurrent: Bool = false) -> APIClient {
+        if let value {
+            return headers(HTTPField(name: field, value: value.description), removeCurrent: removeCurrent)
+        } else {
+            return self
+        }
+    }
 }
 
 // MARK: - Body modifiers