diff --git a/fpga/.gitmodules b/fpga/.gitmodules
index e67658aa1..8bbca3dab 100644
--- a/fpga/.gitmodules
+++ b/fpga/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "thirdparty/libxil"]
 	path = thirdparty/libxil
 	url = https://git.rwth-aachen.de/acs/public/villas/libxil.git
+[submodule "lib/gpu/gdrcopy"]
+	path = lib/gpu/gdrcopy
+	url = https://github.com/daniel-k/gdrcopy.git
diff --git a/fpga/lib/gpu/gdrcopy b/fpga/lib/gpu/gdrcopy
new file mode 160000
index 000000000..2b933176d
--- /dev/null
+++ b/fpga/lib/gpu/gdrcopy
@@ -0,0 +1 @@
+Subproject commit 2b933176d0fd20f10bddfdf574a1d3229ca1ecdf