diff --git a/fpga/lib/gpu/gdrcopy b/fpga/lib/gpu/gdrcopy
index e36e3bbef..fcf4bc566 160000
--- a/fpga/lib/gpu/gdrcopy
+++ b/fpga/lib/gpu/gdrcopy
@@ -1 +1 @@
-Subproject commit e36e3bbeff6d89603ccc0c7f832938f697ac7fd6
+Subproject commit fcf4bc56687c01e71379c174b6875bd3a99b31c7