diff --git a/Octokit.Tests/Helpers/UriExtensionsTests.cs b/Octokit.Tests/Helpers/UriExtensionsTests.cs
new file mode 100644
index 00000000..16798027
--- /dev/null
+++ b/Octokit.Tests/Helpers/UriExtensionsTests.cs
@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using Xunit;
+
+namespace Octokit.Tests.Helpers
+{
+    public class UriExtensionsTests
+    {
+        public class TheApplyParametersMethod
+        {
+            [Fact]
+            public void AppendsParametersAsQueryString()
+            {
+                var uri = new Uri("https://example.com");
+
+                var uriWithParameters = uri.ApplyParameters(new Dictionary<string, string>
+                {
+                    {"foo", "fooval"},
+                    {"bar", "barval"}
+                });
+
+                Assert.Equal(new Uri("https://example.com?foo=fooval&bar=barval"), uriWithParameters);
+            }
+
+            [Fact]
+            public void OverwritesExistingParameters()
+            {
+                var uri = new Uri("https://example.com?crap=crapola");
+
+                var uriWithParameters = uri.ApplyParameters(new Dictionary<string, string>
+                {
+                    {"foo", "fooval"},
+                    {"bar", "barval"}
+                });
+
+                Assert.Equal(new Uri("https://example.com?foo=fooval&bar=barval"), uriWithParameters);
+            }
+
+            [Fact]
+            public void DoesNotChangeUrlWhenParametersIsNullOrEmpty()
+            {
+                var uri = new Uri("https://example.com");
+
+                var uriWithNullParameters = uri.ApplyParameters(null);
+                var uriWithEmptyParameters = uri.ApplyParameters(new Dictionary<string, string>());
+
+                Assert.Same(uri, uriWithNullParameters);
+                Assert.Equal(uri, uriWithEmptyParameters);
+            }
+
+            [Fact]
+            public void EnsuresUriNotNull()
+            {
+                Uri uri = null;
+                Assert.Throws<ArgumentNullException>(() => uri.ApplyParameters(new Dictionary<string, string>()));
+            }
+        }
+    }
+}
diff --git a/Octokit.Tests/Octokit.Tests.csproj b/Octokit.Tests/Octokit.Tests.csproj
index caf9157e..56f30b36 100644
--- a/Octokit.Tests/Octokit.Tests.csproj
+++ b/Octokit.Tests/Octokit.Tests.csproj
@@ -55,6 +55,7 @@
   <ItemGroup>
     <Compile Include="Authentication\CredentialsTests.cs" />
     <Compile Include="Clients\SshKeysClientTests.cs" />
+    <Compile Include="Helpers\UriExtensionsTests.cs" />
     <Compile Include="Http\ApiConnectionTests.cs" />
     <Compile Include="Clients\AuthorizationsClientTests.cs" />
     <Compile Include="Clients\AutoCompleteClientTests.cs" />
diff --git a/Octokit/Helpers/UriExtensions.cs b/Octokit/Helpers/UriExtensions.cs
new file mode 100644
index 00000000..cb5b3436
--- /dev/null
+++ b/Octokit/Helpers/UriExtensions.cs
@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Octokit
+{
+    public static class UriExtensions
+    {
+        public static Uri ApplyParameters(this Uri uri, IDictionary<string, string> parameters)
+        {
+            Ensure.ArgumentNotNull(uri, "uri");
+
+            if (parameters == null) return uri;
+
+            var uriBuilder = new UriBuilder(uri)
+            {
+                Query = String.Join("&", parameters.Select(kvp => kvp.Key + "=" + kvp.Value))
+            };
+            return uriBuilder.Uri;
+        }
+    }
+}
diff --git a/Octokit/Octokit.csproj b/Octokit/Octokit.csproj
index 37a8a39b..a61a0f13 100644
--- a/Octokit/Octokit.csproj
+++ b/Octokit/Octokit.csproj
@@ -48,6 +48,7 @@
     <Compile Include="Authentication\Authenticator.cs" />
     <Compile Include="Clients\SshKeysClient.cs" />
     <Compile Include="Helpers\CollectionExtensions.cs" />
+    <Compile Include="Helpers\UriExtensions.cs" />
     <Compile Include="Http\ApiConnection.cs" />
     <Compile Include="Http\IApiConnection.cs" />
     <Compile Include="Http\IHttpClient.cs" />
diff --git a/Octokit/OctokitRT.csproj b/Octokit/OctokitRT.csproj
index 03f880a4..4b098600 100644
--- a/Octokit/OctokitRT.csproj
+++ b/Octokit/OctokitRT.csproj
@@ -116,6 +116,7 @@
     <Compile Include="Clients\SshKeysClient.cs" />
     <Compile Include="Clients\UsersClient.cs" />
     <Compile Include="Helpers\CollectionExtensions.cs" />
+    <Compile Include="Helpers\UriExtensions.cs" />
     <Compile Include="Http\ApiConnection.cs" />
     <Compile Include="Http\ApiResponse.cs" />
     <Compile Include="Http\Credentials.cs" />