diff --git a/libR-sys b/libR-sys
index 77844fcbb7..ac526fb73d 160000
--- a/libR-sys
+++ b/libR-sys
@@ -1 +1 @@
-Subproject commit 77844fcbb7315dd1e7d7362ac044a44135386488
+Subproject commit ac526fb73d4af334f0e46ad9652ba1b4a78eaaa4