From eb60da4a3e3802d5bde71103eb738c853f5740d3 Mon Sep 17 00:00:00 2001
From: tkim01 <thkim210414@gmail.com>
Date: Sun, 16 Aug 2026 20:50:10 +0900
Subject: [PATCH] Apply frozen candidate patch

---
 moto/ecr/policy_validation.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/moto/ecr/policy_validation.py b/moto/ecr/policy_validation.py
index 286599d..83a68e7 100644
--- a/moto/ecr/policy_validation.py
+++ b/moto/ecr/policy_validation.py
@@ -15,6 +15,7 @@
 VALID_SELECTION_PROPERTIES = {
     "tagPrefixList",
     "countUnit",
+    "maximumSemanticsRetainCount",
     *REQUIRED_SELECTION_PROPERTIES,
 }