diff --git a/hermit/usr/benchmarks/Makefile b/hermit/usr/benchmarks/Makefile
index 604baafb4..bbbee7af5 100644
--- a/hermit/usr/benchmarks/Makefile
+++ b/hermit/usr/benchmarks/Makefile
@@ -97,10 +97,6 @@ RCCE_pingpong: RCCE_pingpong.o
 	$Q$(OBJCOPY_FOR_TARGET) $(STRIP_DEBUG) $@
 	$Qchmod a-x $@.sym
 
-netio.o: netio.c
-	@echo [CC] $@
-	$Q$(CC_FOR_TARGET) -c $(CFLAGS_FOR_TARGET) -D_POSIX_SOURCE -o $@ $<
-
 netio: netio.o
 	@echo [LD] $@
 	$Q$(CC_FOR_TARGET) -o $@ $< $(LDFLAGS_FOR_TARGET) $(CFLAGS_FOR_TARGET)
diff --git a/hermit/usr/newlib b/hermit/usr/newlib
index 88c972086..6c1f50c29 160000
--- a/hermit/usr/newlib
+++ b/hermit/usr/newlib
@@ -1 +1 @@
-Subproject commit 88c9720864aa92b8ee5b2bf06a5718ca8eba6f69
+Subproject commit 6c1f50c29faf3096050ffcfeadf0c051d532ea7b