diff --git a/backend/src/main/resources/yigongil-private b/backend/src/main/resources/yigongil-private
index 3aa6aa46..28c9cecf 160000
--- a/backend/src/main/resources/yigongil-private
+++ b/backend/src/main/resources/yigongil-private
@@ -1 +1 @@
-Subproject commit 3aa6aa464b919b1ec6fd2a2e6a241775510e8556
+Subproject commit 28c9cecf4a36245c4663949e47cb1aed22be4eee