diff --git a/Sources/OpenAI/OpenAI.swift b/Sources/OpenAI/OpenAI.swift
index 199e3eb3..5ff52833 100644
--- a/Sources/OpenAI/OpenAI.swift
+++ b/Sources/OpenAI/OpenAI.swift
@@ -22,14 +22,17 @@ final public class OpenAI: OpenAIProtocol {
         
         /// API host. Set this property if you use some kind of proxy or your own server. Default is api.openai.com
         public let host: String
-        
+        public let port: Int
+        public let scheme: String
         /// Default request timeout
         public let timeoutInterval: TimeInterval
         
-        public init(token: String, organizationIdentifier: String? = nil, host: String = "api.openai.com", timeoutInterval: TimeInterval = 60.0) {
+        public init(token: String, organizationIdentifier: String? = nil, host: String = "api.openai.com", port: Int = 443, scheme: String = "https", timeoutInterval: TimeInterval = 60.0) {
             self.token = token
             self.organizationIdentifier = organizationIdentifier
             self.host = host
+            self.port = port
+            self.scheme = scheme
             self.timeoutInterval = timeoutInterval
         }
     }
@@ -196,8 +199,9 @@ extension OpenAI {
     
     func buildURL(path: String) -> URL {
         var components = URLComponents()
-        components.scheme = "https"
+        components.scheme = configuration.scheme
         components.host = configuration.host
+        components.port = configuration.port
         components.path = path
         return components.url!
     }