diff --git a/landscape.yml b/landscape.yml
index a22c22004f1..af86ca98652 100644
--- a/landscape.yml
+++ b/landscape.yml
@@ -3181,7 +3181,7 @@ landscape:
               accepted: '2021-04-28'
               clomonitor_name: submariner
               annual_review_url: https://github.com/cncf/toc/pull/1115
-              annual_review_date: 2023-07-11T00:00:00.000Z
+              annual_review_date: '2023-07-11'
           - item:
             name: Tungsten Fabric
             homepage_url: https://tungsten.io