diff --git a/src/main/resources/openapi/openapi.yaml b/src/main/resources/openapi/openapi.yaml
index 67786e5..d5a9ee4 100644
--- a/src/main/resources/openapi/openapi.yaml
+++ b/src/main/resources/openapi/openapi.yaml
@@ -748,13 +748,13 @@ components:
         culture:
           type: string
           description: The culture being rotated
-          minimum: 1
-          maximum: 20
+          minLength: 1
+          maxLength: 20
         cultivar:
           type: string
           description: The specific cultivar
-          minimum: 1
-          maximum: 20
+          minLength: 1
+          maxLength: 20
         startDate:
           type: string
           format: date