diff --git a/third_party/pigweed b/third_party/pigweed
index 9a0e93f..b21f1b7 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9a0e93fe506c9f594fdb4927a5e663c4465e12e2
+Subproject commit b21f1b705dbf644d0d97817705a3231304f21fbc