diff --git a/CHANGELOG.md b/CHANGELOG.md
index e666bb2..2d28246 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -84,6 +84,12 @@
    out how to stop, or get in touch. This symbol will be marked static the
    release after deprecation.
 
+6. pdr: Deprecate find_entity_ref_in_tree()
+
+   There should be no users of this symbol. If you are a user, you should figure
+   out how to stop, or get in touch. This symbol will be marked static the
+   release after deprecation.
+
 ### Removed
 
 1. bios_table: Remove deprecated APIs sanitized by assert():
diff --git a/src/pdr.c b/src/pdr.c
index 3223cfb..4acdbcf 100644
--- a/src/pdr.c
+++ b/src/pdr.c
@@ -954,7 +954,7 @@
 	return 0;
 }
 
-LIBPLDM_ABI_STABLE
+LIBPLDM_ABI_DEPRECATED
 void find_entity_ref_in_tree(pldm_entity_node *tree_node, pldm_entity entity,
 			     pldm_entity_node **node)
 {