diff --git a/third_party/pigweed b/third_party/pigweed
index 508e145..21bcbe6 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 508e145f7f9814f7c5a46e7d9abb34154eb05b7c
+Subproject commit 21bcbe67b4552d1699951ba977790824f2c28d57