diff --git a/third_party/pigweed b/third_party/pigweed
index 19e98dd..ef86a47 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 19e98dd2e2b099c5e860aea0d948ccf705039929
+Subproject commit ef86a47f69065196b3c5ee0a6b2616e4e3bd553a