diff --git a/third_party/pigweed b/third_party/pigweed
index fb7c6e5..c39f223 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit fb7c6e5b8edb09ada552f4c9d2d82d1aefc7978b
+Subproject commit c39f223fb52bc2386cf70ddb5606a0eed02cc921