diff --git a/builder/musl.go b/builder/musl.go
index a1967e37..8d577f66 100644
--- a/builder/musl.go
+++ b/builder/musl.go
@@ -90,6 +90,7 @@ var Musl = Library{
 			"-Wno-ignored-attributes",
 			"-Wno-string-plus-int",
 			"-Wno-ignored-pragmas",
+			"-Wno-tautological-constant-out-of-range-compare",
 			"-Qunused-arguments",
 			// Select include dirs. Don't include standard library includes
 			// (that would introduce host dependencies and other complications),
@@ -117,6 +118,7 @@ var Musl = Library{
 			"internal/vdso.c",
 			"legacy/*.c",
 			"malloc/*.c",
+			"malloc/mallocng/*.c",
 			"mman/*.c",
 			"math/*.c",
 			"signal/*.c",
diff --git a/lib/musl b/lib/musl
index 040c1d16..7a43f6fe 160000
--- a/lib/musl
+++ b/lib/musl
@@ -1 +1 @@
-Subproject commit 040c1d16b468c50c04fc94edff521f1637708328
+Subproject commit 7a43f6fea9081bdd53d8a11cef9e9fab0348c53d