diff --git a/docs/openapi/specs/models.yaml b/docs/openapi/specs/models.yaml
index 1bd7e65d7..1322b90ee 100644
--- a/docs/openapi/specs/models.yaml
+++ b/docs/openapi/specs/models.yaml
@@ -289,7 +289,7 @@ components:
             engine:
               type: string
               description: "The engine used by the model."
-              example: "llamacpp"
+              enum: [nitro, openai, hf_inference]
             quantization:
               type: string
               description: "Quantization parameter of the model."