diff --git a/adapters/seedtag/params_test.go b/adapters/seedtag/params_test.go
index 2c392377397..f8a6eff8dd4 100644
--- a/adapters/seedtag/params_test.go
+++ b/adapters/seedtag/params_test.go
@@ -35,10 +35,16 @@ func TestInvalidParams(t *testing.T) {
 
 var validParams = []string{
 	`{"adUnitId": "27604970"}`,
+	`{"publisherId": "abc123", "integrationType": "ronId"}`,
 }
 
 var invalidParams = []string{
 	`{"adUnitId": 123}`,
 	`{"adUnitId": ""}`,
 	`{}`,
+	`{"publisherId": "abc123"}`,
+	`{"integrationType": "ronId"}`,
+	`{"publisherId": "", "integrationType": "ronId"}`,
+	`{"publisherId": "abc123", "integrationType": "unknown"}`,
+	`{"adUnitId": "27604970", "publisherId": "abc123", "integrationType": "ronId"}`,
 }
diff --git a/openrtb_ext/imp_seedtag.go b/openrtb_ext/imp_seedtag.go
index 825595dd291..4a235cb986a 100644
--- a/openrtb_ext/imp_seedtag.go
+++ b/openrtb_ext/imp_seedtag.go
@@ -1,5 +1,7 @@
 package openrtb_ext
 
 type ImpExtSeedtag struct {
-	AdUnitID string `json:"adUnitId"`
+	AdUnitID        string `json:"adUnitId,omitempty"`
+	PublisherID     string `json:"publisherId,omitempty"`
+	IntegrationType string `json:"integrationType,omitempty"`
 }
diff --git a/static/bidder-params/seedtag.json b/static/bidder-params/seedtag.json
index 7f361c44f9e..677fb9fba2c 100644
--- a/static/bidder-params/seedtag.json
+++ b/static/bidder-params/seedtag.json
@@ -6,11 +6,26 @@
     "properties": {
         "adUnitId": {
             "type": "string",
-            "description": "Ad Unit ID",
+            "description": "Ad Unit ID for the placement",
             "minLength": 1
+        },
+        "publisherId": {
+            "type": "string",
+            "description": "Publisher group ID for RON integration",
+            "minLength": 1
+        },
+        "integrationType": {
+            "type": "string",
+            "description": "Integration type. Use 'ronId' when integrating via publisherToken",
+            "enum": ["ronId"]
         }
     },
-    "required": [
-        "adUnitId"
+    "oneOf": [
+        {
+            "required": ["adUnitId"]
+        },
+        {
+            "required": ["publisherId", "integrationType"]
+        }
     ]
-}
\ No newline at end of file
+}