diff --git a/private/system_server.te b/private/system_server.te
index 6a13816..f39668e 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -1504,6 +1504,10 @@
 allow system_server password_slot_metadata_file:dir rw_dir_perms;
 allow system_server password_slot_metadata_file:file create_file_perms;
 
+# Allow TradeInMode service rw access to /metadata/tradeinmode.
+allow system_server tradeinmode_metadata_file:dir rw_dir_perms;
+allow system_server tradeinmode_metadata_file:file create_file_perms;
+
 allow system_server userspace_reboot_metadata_file:dir create_dir_perms;
 allow system_server userspace_reboot_metadata_file:file create_file_perms;
 
@@ -1679,6 +1683,9 @@
 neverallow { domain -init -system_server } crashrecovery_prop:property_service set;
 neverallow { domain -init -dumpstate -system_server } crashrecovery_prop:file no_rw_file_perms;
 
+# Do not allow anything other than system_server and init to touch /metadata/tradeinmode.
+neverallow { domain -init -system_server } tradeinmode_metadata_file:file no_rw_file_perms;
+
 neverallow {
   domain
   -init