diff --git a/Modio/Client.cs b/Modio/Client.cs
index b88500d..c7cb422 100644
--- a/Modio/Client.cs
+++ b/Modio/Client.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Net.Http;
 using System.Threading.Tasks;
 
 using Modio.Models;
@@ -50,6 +51,13 @@ public Client(Credentials credentials) : this(new Connection(ModioApiUrl, creden
         public Client(Uri baseUrl, Credentials credentials) : this(new Connection(FixBaseUrl(baseUrl), credentials))
         {
         }
+        
+        /// <summary>
+        /// Initializes a new instance of <see cref="Client"/> with a custom host, custom <paramref name="credentials"/>, and a custom <paramref name="httpClient"/>.
+        /// </summary>
+        public Client(Uri baseUrl, Credentials credentials, HttpClient httpClient) : this(new Connection(FixBaseUrl(baseUrl), credentials, httpClient))
+        {
+        }
 
         private Client(IConnection connection)
         {
diff --git a/Modio/Http/Connection.cs b/Modio/Http/Connection.cs
index 5f0289c..635ec1d 100644
--- a/Modio/Http/Connection.cs
+++ b/Modio/Http/Connection.cs
@@ -24,9 +24,13 @@ internal class Connection : IConnection
 
         public Credentials Credentials { get; set; }
 
-        public Connection(Uri baseAddress, Credentials credentials)
+        public Connection(Uri baseAddress, Credentials credentials) : this(baseAddress, credentials, new HttpClient())
         {
-            http = new HttpClient();
+        }
+
+        public Connection(Uri baseAddress, Credentials credentials, HttpClient httpClient)
+        {
+            http = httpClient;
             BaseAddress = baseAddress;
             Credentials = credentials;
         }