diff --git a/mk/prefix.mk b/mk/prefix.mk
index 54814c3..d734e44 100644
--- a/mk/prefix.mk
+++ b/mk/prefix.mk
@@ -29,6 +29,8 @@ $(PREFIX)/relibc-install: $(ROOT)/relibc | $(PREFIX)/gcc-install
 	cd "$<" && \
 	export PATH="$(ROOT)/$@.partial/bin:$$PATH" && \
 	export CARGO=xargo && \
+	make -j `$(NPROC)` headers && \
+	make -j `$(NPROC)` install-headers DESTDIR="$(ROOT)/$@.partial/$(TARGET)" && \
 	make -j `$(NPROC)` all && \
 	make -j `$(NPROC)` install DESTDIR="$(ROOT)/$@.partial/$(TARGET)"
 	cd "$@.partial" && $(PREFIX_STRIP)
diff --git a/relibc b/relibc
index f4fccc6..2fdca9b 160000
--- a/relibc
+++ b/relibc
@@ -1 +1 @@
-Subproject commit f4fccc6d19480be55f230367b6300b0019248286
+Subproject commit 2fdca9bd0a1333e5f0aa8b88ebc3616ca7c11bb0