diff --git a/src/NzbDrone.Core.Test/Datastore/Migration/090_update_kickass_urlFixture.cs b/src/NzbDrone.Core.Test/Datastore/Migration/090_update_kickass_urlFixture.cs
new file mode 100644
index 000000000..b3e97b6c9
--- /dev/null
+++ b/src/NzbDrone.Core.Test/Datastore/Migration/090_update_kickass_urlFixture.cs
@@ -0,0 +1,66 @@
+using System.Linq;
+using FluentAssertions;
+using NUnit.Framework;
+using NzbDrone.Common.Serializer;
+using NzbDrone.Core.Datastore.Migration;
+using NzbDrone.Core.Indexers;
+using NzbDrone.Core.Indexers.KickassTorrents;
+using NzbDrone.Core.Test.Framework;
+
+namespace NzbDrone.Core.Test.Datastore.Migration
+{
+    [TestFixture]
+    public class update_kickass_url_migration_fixture : MigrationTest<update_kickass_url>
+    {
+        [TestCase("http://kickass.so")]
+        [TestCase("https://kickass.so")]
+        [TestCase("http://kickass.to")]
+        [TestCase("https://kickass.to")]
+        [TestCase("http://kat.cr")]
+        // [TestCase("HTTP://KICKASS.SO")] Not sure if there is an easy way to do this, not sure if worth it.
+        public void should_replace_old_url(string oldUrl)
+        {
+            WithTestDb(c =>
+            {
+                c.Insert.IntoTable("Indexers").Row(new 
+                {
+                    Name = "Kickass_wrong_url",
+                    Implementation = "KickassTorrents",
+                    Settings = new KickassTorrentsSettings
+                    {
+                        BaseUrl = oldUrl
+                    }.ToJson(),
+                    ConfigContract = "KickassTorrentsSettings"
+                });
+            });
+
+            var items = Mocker.Resolve<IndexerRepository>().All().ToList();
+
+            items.Should().HaveCount(1);
+            items.First().Settings.As<KickassTorrentsSettings>().BaseUrl.Should().Be("https://kat.cr");
+        }
+
+        [Test]
+        public void should_not_replace_other_indexers()
+        {
+            WithTestDb(c =>
+            {
+                c.Insert.IntoTable("Indexers").Row(new
+                {
+                    Name = "not_kickass",
+                    Implementation = "NotKickassTorrents",
+                    Settings = new KickassTorrentsSettings
+                    {
+                        BaseUrl = "kickass.so",
+                    }.ToJson(),
+                    ConfigContract = "KickassTorrentsSettings"
+                });
+            });
+
+            var items = Mocker.Resolve<IndexerRepository>().All().ToList();
+
+            items.Should().HaveCount(1);
+            items.First().Settings.As<KickassTorrentsSettings>().BaseUrl.Should().Be("kickass.so");
+        }
+    }
+}
diff --git a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
index d7376ac81..12e11e476 100644
--- a/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
+++ b/src/NzbDrone.Core.Test/NzbDrone.Core.Test.csproj
@@ -127,6 +127,7 @@
     <Compile Include="Datastore\Migration\081_move_dot_prefix_to_transmission_categoryFixture.cs" />
     <Compile Include="Datastore\Migration\079_dedupe_tagsFixture.cs" />
     <Compile Include="Datastore\Migration\075_force_lib_updateFixture.cs" />
+    <Compile Include="Datastore\Migration\089_update_kickass_urlFixture.cs" />
     <Compile Include="Datastore\ObjectDatabaseFixture.cs" />
     <Compile Include="Datastore\PagingSpecExtensionsTests\PagingOffsetFixture.cs" />
     <Compile Include="Datastore\PagingSpecExtensionsTests\ToSortDirectionFixture.cs" />
diff --git a/src/NzbDrone.Core/Datastore/Migration/090_update_kickass_url.cs b/src/NzbDrone.Core/Datastore/Migration/090_update_kickass_url.cs
new file mode 100644
index 000000000..aa8166803
--- /dev/null
+++ b/src/NzbDrone.Core/Datastore/Migration/090_update_kickass_url.cs
@@ -0,0 +1,18 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(90)]
+    public class update_kickass_url : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Execute.Sql(
+                "UPDATE Indexers SET Settings = Replace(Settings, 'kickass.so', 'kat.cr') WHERE Implementation = 'KickassTorrents';" +
+                "UPDATE Indexers SET Settings = Replace(Settings, 'kickass.to', 'kat.cr') WHERE Implementation = 'KickassTorrents';" +
+                "UPDATE Indexers SET Settings = Replace(Settings, 'http://', 'https://') WHERE Implementation = 'KickassTorrents';"
+           );
+        }
+    }
+}
diff --git a/src/NzbDrone.Core/Indexers/KickassTorrents/KickassTorrentsSettings.cs b/src/NzbDrone.Core/Indexers/KickassTorrents/KickassTorrentsSettings.cs
index b623cac04..aac647d30 100644
--- a/src/NzbDrone.Core/Indexers/KickassTorrents/KickassTorrentsSettings.cs
+++ b/src/NzbDrone.Core/Indexers/KickassTorrents/KickassTorrentsSettings.cs
@@ -20,7 +20,7 @@ namespace NzbDrone.Core.Indexers.KickassTorrents
 
         public KickassTorrentsSettings()
         {
-            BaseUrl = "http://kat.cr";
+            BaseUrl = "https://kat.cr";
             VerifiedOnly = true;
         }
 
diff --git a/src/NzbDrone.Core/NzbDrone.Core.csproj b/src/NzbDrone.Core/NzbDrone.Core.csproj
index 3a7215a51..1e271063c 100644
--- a/src/NzbDrone.Core/NzbDrone.Core.csproj
+++ b/src/NzbDrone.Core/NzbDrone.Core.csproj
@@ -263,6 +263,7 @@
     <Compile Include="Datastore\Migration\083_additonal_blacklist_columns.cs" />
     <Compile Include="Datastore\Migration\082_add_fanzub_settings.cs" />
     <Compile Include="Datastore\Migration\088_pushbullet_devices_channels_list.cs" />
+    <Compile Include="Datastore\Migration\089_update_kickass_url.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationContext.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationController.cs" />
     <Compile Include="Datastore\Migration\Framework\MigrationDbFactory.cs" />