diff --git a/src/c-rbtree/subprojects/c-stdaux b/src/c-rbtree/subprojects/c-stdaux
index 346623b40..c5f166d02 160000
--- a/src/c-rbtree/subprojects/c-stdaux
+++ b/src/c-rbtree/subprojects/c-stdaux
@@ -1 +1 @@
-Subproject commit 346623b40eb8137cae7568a69ee42253ff098ff7
+Subproject commit c5f166d02ff68af5cdcbad1bdcea2cb134e34ce4