diff --git a/third_party/pigweed b/third_party/pigweed
index e79414e..4a9b1e0 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e79414ec1071a382b92e56601bb569439b5d3125
+Subproject commit 4a9b1e019b19eb4fa669100c4af332dbee7aacf5