diff --git a/api/v1/openapi.yaml b/api/v1/openapi.yaml
index 079a032..ca067c5 100644
--- a/api/v1/openapi.yaml
+++ b/api/v1/openapi.yaml
@@ -313,6 +313,8 @@ paths:
                 $ref: "#/components/schemas/CreateTrainingDateAttendeeResponse"
         "400":
           $ref: "#/components/responses/InvalidInputError"
+        "404":
+          $ref: "#/components/responses/NotFoundError"
         "500":
           $ref: "#/components/responses/InternalError"