diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b39ed35..a0c9105 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: windows-latest
 
     steps:
     - uses: actions/checkout@v4
diff --git a/System.Test/IsOnlineTest.cs b/System.Test/IsOnlineTest.cs
index 34d3906..d59fbbb 100644
--- a/System.Test/IsOnlineTest.cs
+++ b/System.Test/IsOnlineTest.cs
@@ -41,7 +41,7 @@ public void ConstructorWithIpAddressAndCustomTimeout()
 			Assert.AreEqual(customTimeout, isOnline.TimeOut, $"Timeout should be {customTimeout}.");
 		}
 
-		/*[TestMethod]
+		[TestMethod]
 		public void CheckWithHostname()
 		{
 			IsOnline isOnline = new(_googleHostname);
@@ -59,6 +59,6 @@ public void CheckWithIpAddress()
 			bool result = isOnline.Check();
 
 			Assert.IsTrue(result, "Google IP address should be reachable.");
-		}*/
+		}
 	}
 }