diff --git a/libavr b/libavr
index 56337f3..c21ed31 160000
--- a/libavr
+++ b/libavr
@@ -1 +1 @@
-Subproject commit 56337f37de2f369a6196f8bfdf0b7165b8ea61bf
+Subproject commit c21ed3171efd9081a77194a1f3c96d0e62202984