diff --git a/contracts/libc++/upstream b/contracts/libc++/upstream
index 959b01fb8b617851e260bd2218ac8ba74269fec9..2880ac42909d4bb29687ed079f8bb4405c3b0869 160000
--- a/contracts/libc++/upstream
+++ b/contracts/libc++/upstream
@@ -1 +1 @@
-Subproject commit 959b01fb8b617851e260bd2218ac8ba74269fec9
+Subproject commit 2880ac42909d4bb29687ed079f8bb4405c3b0869
diff --git a/contracts/musl/upstream b/contracts/musl/upstream
index ee49ba896db1de3c3e4f4285eb4e285b641a6cd9..d5cc86cd7815980cf81e64853a69e2ae942732eb 160000
--- a/contracts/musl/upstream
+++ b/contracts/musl/upstream
@@ -1 +1 @@
-Subproject commit ee49ba896db1de3c3e4f4285eb4e285b641a6cd9
+Subproject commit d5cc86cd7815980cf81e64853a69e2ae942732eb