diff --git a/fpga/lib/gpu/gdrcopy b/fpga/lib/gpu/gdrcopy
index 0441daa44..fcf4bc566 160000
--- a/fpga/lib/gpu/gdrcopy
+++ b/fpga/lib/gpu/gdrcopy
@@ -1 +1 @@
-Subproject commit 0441daa447b80260c4e11096f03e88f7be08bfa2
+Subproject commit fcf4bc56687c01e71379c174b6875bd3a99b31c7