diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/270_median_absolute_deviation_metric.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/270_median_absolute_deviation_metric.yml
index 412a25ffa356..b52027f98c83 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/270_median_absolute_deviation_metric.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/search.aggregation/270_median_absolute_deviation_metric.yml
@@ -1,6 +1,6 @@
 setup:
   - skip:
-        version: " - 6.6.0"
+        version: " - 6.5.99"
         reason:  "added in 6.6.0"
   - do:
         indices.create: