diff --git a/lib/libc++/Makefile b/lib/libc++/Makefile
index bfb394fda2f..066faf4abb1 100644
--- a/lib/libc++/Makefile
+++ b/lib/libc++/Makefile
@@ -112,6 +112,7 @@ STD_HEADERS+=	algorithm
 STD_HEADERS+=	any
 STD_HEADERS+=	array
 STD_HEADERS+=	atomic
+STD_HEADERS+=	barrier
 STD_HEADERS+=	bit
 STD_HEADERS+=	bitset
 STD_HEADERS+=	cassert
@@ -131,6 +132,7 @@ STD_HEADERS+=	codecvt
 STD_HEADERS+=	compare
 STD_HEADERS+=	complex
 STD_HEADERS+=	complex.h
+STD_HEADERS+=	concepts
 STD_HEADERS+=	condition_variable
 STD_HEADERS+=	csetjmp
 STD_HEADERS+=	csignal
@@ -149,6 +151,7 @@ STD_HEADERS+=	cwctype
 STD_HEADERS+=	deque
 STD_HEADERS+=	errno.h
 STD_HEADERS+=	exception
+STD_HEADERS+=	execution
 STD_HEADERS+=	fenv.h
 STD_HEADERS+=	filesystem
 STD_HEADERS+=	float.h
@@ -164,6 +167,7 @@ STD_HEADERS+=	iosfwd
 STD_HEADERS+=	iostream
 STD_HEADERS+=	istream
 STD_HEADERS+=	iterator
+STD_HEADERS+=	latch
 STD_HEADERS+=	limits
 STD_HEADERS+=	limits.h
 STD_HEADERS+=	list
@@ -174,6 +178,7 @@ STD_HEADERS+=	math.h
 STD_HEADERS+=	memory
 STD_HEADERS+=	mutex
 STD_HEADERS+=	new
+STD_HEADERS+=	numbers
 STD_HEADERS+=	numeric
 STD_HEADERS+=	optional
 STD_HEADERS+=	ostream
@@ -182,6 +187,7 @@ STD_HEADERS+=	random
 STD_HEADERS+=	ratio
 STD_HEADERS+=	regex
 STD_HEADERS+=	scoped_allocator
+STD_HEADERS+=	semaphore
 STD_HEADERS+=	set
 STD_HEADERS+=	setjmp.h
 STD_HEADERS+=	shared_mutex