diff --git a/Octokit.Tests.Integration/Helper.cs b/Octokit.Tests.Integration/Helper.cs
index 07cae5024e..4cd52f8aac 100644
--- a/Octokit.Tests.Integration/Helper.cs
+++ b/Octokit.Tests.Integration/Helper.cs
@@ -48,7 +48,17 @@ public static class Helper
                 return null;
 
             return new Credentials(githubUsername, githubPassword);
-        }); 
+        });
+
+        static readonly Lazy<Uri> _gitHubEnterpriseUrl = new Lazy<Uri>(() =>
+        {
+            string uri = Environment.GetEnvironmentVariable("OCTOKIT_GITHUBENTERPRISEURL");
+
+            if (uri != null)
+                return new Uri(uri);
+
+            return null;
+        });
 
         static Helper()
         {
@@ -67,6 +77,8 @@ static Helper()
 
         public static Credentials BasicAuthCredentials { get { return _basicAuthCredentials.Value; } }
 
+        public static Uri GitHubEnterpriseUrl {  get { return _gitHubEnterpriseUrl.Value; } }
+
         public static bool IsUsingToken
         {
             get
@@ -128,7 +140,7 @@ public static Stream LoadFixture(string fileName)
 
         public static IGitHubClient GetAuthenticatedClient()
         {
-            return new GitHubClient(new ProductHeaderValue("OctokitTests"))
+            return new GitHubClient(new ProductHeaderValue("OctokitTests"), GitHubEnterpriseUrl ?? GitHubClient.GitHubApiUrl)
             {
                 Credentials = Credentials
             };
@@ -136,7 +148,7 @@ public static IGitHubClient GetAuthenticatedClient()
 
         public static IGitHubClient GetBasicAuthClient()
         {
-            return new GitHubClient(new ProductHeaderValue("OctokitTests"))
+            return new GitHubClient(new ProductHeaderValue("OctokitTests"), GitHubEnterpriseUrl ?? GitHubClient.GitHubApiUrl)
             {
                 Credentials = BasicAuthCredentials
             };
@@ -144,7 +156,7 @@ public static IGitHubClient GetBasicAuthClient()
 
         public static GitHubClient GetAuthenticatedApplicationClient()
         {
-            return new GitHubClient(new ProductHeaderValue("OctokitTests"))
+            return new GitHubClient(new ProductHeaderValue("OctokitTests"), GitHubEnterpriseUrl ?? GitHubClient.GitHubApiUrl)
             {
                 Credentials = ApplicationCredentials
             };
@@ -152,12 +164,12 @@ public static GitHubClient GetAuthenticatedApplicationClient()
 
         public static IGitHubClient GetAnonymousClient()
         {
-            return new GitHubClient(new ProductHeaderValue("OctokitTests"));
+            return new GitHubClient(new ProductHeaderValue("OctokitTests"), GitHubEnterpriseUrl ?? GitHubClient.GitHubApiUrl);
         }
 
         public static IGitHubClient GetBadCredentialsClient()
         {
-            return new GitHubClient(new ProductHeaderValue("OctokitTests"))
+            return new GitHubClient(new ProductHeaderValue("OctokitTests"), GitHubEnterpriseUrl ?? GitHubClient.GitHubApiUrl)
             {
                 Credentials = new Credentials(Guid.NewGuid().ToString(), "bad-password")
             };
diff --git a/script/configure-integration-tests.ps1 b/script/configure-integration-tests.ps1
index 7f55d42c19..5592c3e495 100644
--- a/script/configure-integration-tests.ps1
+++ b/script/configure-integration-tests.ps1
@@ -75,5 +75,7 @@ AskYesNoQuestion "Do you have private repositories associated with your test acc
 
 VerifyEnvironmentVariable "organization name" "OCTOKIT_GITHUBORGANIZATION" $true
 
+VerifyEnvironmentVariable "GitHub Enterprise Server URL" "OCTOKIT_GITHUBENTERPRISEURL" $true
+
 VerifyEnvironmentVariable "application ClientID" "OCTOKIT_CLIENTID" $true
 VerifyEnvironmentVariable "application Secret" "OCTOKIT_CLIENTSECRET" $true
\ No newline at end of file