diff --git a/third_party/pigweed b/third_party/pigweed
index b9bc4e2..a81ed74 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit b9bc4e28917ea9fdcf1fe5acb81dfb1113480bb2
+Subproject commit a81ed7459b3b4547947ce2db5c6764d4f670c4b1