diff --git a/third_party/pigweed b/third_party/pigweed
index 24eef22..fb640c8 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 24eef22e00e02faaac56249560069e52a26fd0aa
+Subproject commit fb640c84662c7444f3efb41c5a7abc5fd4091f3b