diff --git a/src/NzbDrone.Core/IndexerVersions/IndexerDefinitionUpdateService.cs b/src/NzbDrone.Core/IndexerVersions/IndexerDefinitionUpdateService.cs
index 6b2c4dc91..3c522bfb7 100644
--- a/src/NzbDrone.Core/IndexerVersions/IndexerDefinitionUpdateService.cs
+++ b/src/NzbDrone.Core/IndexerVersions/IndexerDefinitionUpdateService.cs
@@ -28,8 +28,8 @@ namespace NzbDrone.Core.IndexerVersions
     {
         /* Update Service will fall back if version # does not exist for an indexer  per Ta */
 
-        private const string DEFINITION_BRANCH = "master";
-        private const int DEFINITION_VERSION = 9;
+        private const string DEFINITION_BRANCH = "cardigann-contains";
+        private const int DEFINITION_VERSION = 10;
 
         // Used when moving yml to C#
         private readonly List<string> _definitionBlocklist = new ()
diff --git a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannDefinition.cs b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannDefinition.cs
index 9ada719c1..2112081c7 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannDefinition.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannDefinition.cs
@@ -134,6 +134,7 @@ namespace NzbDrone.Core.Indexers.Definitions.Cardigann
     {
         public string Path { get; set; }
         public string Selector { get; set; }
+        public string Contains { get; set; }
     }
 
     public class RatioBlock : SelectorBlock
diff --git a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannRequestGenerator.cs b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannRequestGenerator.cs
index 814799752..636f5e8fe 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannRequestGenerator.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Cardigann/CardigannRequestGenerator.cs
@@ -1028,6 +1028,16 @@ namespace NzbDrone.Core.Indexers.Definitions.Cardigann
                 return true;
             }
 
+            if (_definition.Login.Test?.Contains != null && _definition.Login.Test.Contains.IsNotNullOrWhiteSpace())
+            {
+                if (_definition.Login.Test.Contains[0] == '!')
+                {
+                    return response.Content.Contains(_definition.Login.Test.Contains[1..]);
+                }
+
+                return !response.Content.Contains(_definition.Login.Test.Contains);
+            }
+
             // Only run html test selector on html responses
             if (_definition.Login.Test?.Selector != null && (response.Headers.ContentType?.Contains("text/html") ?? true))
             {