diff --git a/certified-connectors/DeepL/apiDefinition.swagger.json b/certified-connectors/DeepL/apiDefinition.swagger.json
index 95759d0806..325f24d8fa 100644
--- a/certified-connectors/DeepL/apiDefinition.swagger.json
+++ b/certified-connectors/DeepL/apiDefinition.swagger.json
@@ -181,6 +181,18 @@
             "description": "Specify the glossary to use for the translation",
             "type": "string"
           },
+          {
+            "in": "formData",
+            "name": "model_type",
+            "x-ms-summary": "Model Type",
+            "description": "Sets which type of model to use for the translation",
+            "type": "string",
+            "enum": [
+              "quality_optimized",
+              "prefer_quality_optimized",
+              "latency_optimized"
+            ]
+          },
           {
             "in": "formData",
             "name": "tag_handling",