diff --git a/third_party/pigweed b/third_party/pigweed
index a5f72ef..40ced78 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a5f72ef6f5e0e7844801d913d3bbe5c6538b640c
+Subproject commit 40ced78e4ae4490c6c429257717f08da30700a25