diff --git a/third_party/pigweed b/third_party/pigweed
index a1860f5..3a9fa09 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a1860f5c3754c74cab9eab1dd5daf847396bc23d
+Subproject commit 3a9fa099ffe317d0fe238da6de88c178aa830c0a