diff --git a/tests/test_views.py b/tests/test_views.py
index b59355d..cc87361 100644
--- a/tests/test_views.py
+++ b/tests/test_views.py
@@ -371,7 +371,8 @@ def test_get_active_channels(client, mocker, requests_mock):
 	assert response.json() == [
 		{
 			"channel_login": "foo_bar",
-			"deck_url": deck_url
+			"deck_url": deck_url,
+			"affiliate_utm": None,
 		}
 	]
 
@@ -440,7 +441,8 @@ def test_get_active_channels_with_cached_deck(client, mocker, requests_mock):
 	assert response.json() == [
 		{
 			"channel_login": "foo_bar",
-			"deck_url": deck_url
+			"deck_url": deck_url,
+			"affiliate_utm": None,
 		}
 	]
 	mock_get_shortid_from_deck_list.assert_not_called()
@@ -493,7 +495,8 @@ def test_get_active_channels_for_bgs_game(client, mocker, requests_mock):
 	assert response.json() == [
 		{
 			"channel_login": "foo_bar",
-			"deck_url": None
+			"deck_url": None,
+			"affiliate_utm": None,
 		}
 	]
 
diff --git a/twitch_hdt_ebs/serializers.py b/twitch_hdt_ebs/serializers.py
index e531310..65d71d2 100644
--- a/twitch_hdt_ebs/serializers.py
+++ b/twitch_hdt_ebs/serializers.py
@@ -42,6 +42,7 @@ class ConfigSerializer(serializers.Serializer):
 		max_value=50,
 	)
 	promote_on_hsreplaynet = serializers.BooleanField(default=True)
+	affiliate_utm = serializers.CharField(required=False)
 
 	def validate_hidden(self, value):
 		if value == "":
diff --git a/twitch_hdt_ebs/views.py b/twitch_hdt_ebs/views.py
index 582b406..d7d68a8 100644
--- a/twitch_hdt_ebs/views.py
+++ b/twitch_hdt_ebs/views.py
@@ -151,14 +151,14 @@ def post(self, request, format=None) -> Response:
 		serializer = self.serializer_class(data=request.data)
 		serializer.is_valid(raise_exception=True)
 
+		config = ConfigSerializer(instance=request.user.settings.get("twitch_ebs", {}))
+
 		data = serializer.validated_data["data"]
 		if serializer.validated_data["type"] == "game_start":
-			self.cache_deck_data(data, serializer.validated_data["version"])
+			self.cache_deck_data(data, serializer.validated_data["version"], config)
 		else:
 			self.heartbeat_deck_data()
 
-		config = ConfigSerializer(instance=request.user.settings.get("twitch_ebs", {}))
-
 		pubsub_data = {
 			"type": serializer.validated_data["type"],
 			"data": serializer.validated_data["data"],
@@ -185,7 +185,7 @@ def post(self, request, format=None) -> Response:
 			}
 		)
 
-	def cache_deck_data(self, data, version: int) -> bool:
+	def cache_deck_data(self, data, version: int, config: dict) -> bool:
 		if version < 3:
 			# Discard old HDT versions
 			return False
@@ -213,6 +213,7 @@ def cache_deck_data(self, data, version: int) -> bool:
 			"legend_rank": data.get("legend_rank", 0),
 			"game_type": data.get("game_type", 0),
 			"twitch_user_id": self.request.twitch_user_id,
+			"affiliate_utm": config["affiliate_utm"],
 		}, timeout=120)
 
 		return True
@@ -443,7 +444,8 @@ def get(self, request):
 
 			data.append({
 				"channel_login": channel_login,
-				"deck_url": deck_url
+				"deck_url": deck_url,
+				"affiliate_utm": details.get("affiliate_utm")
 			})
 
 		return Response(status=200, data=data)