diff --git a/.gitmodules b/.gitmodules
index 20c09e32b..71d71be6b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "test/programs/coremark"]
 	path = test/programs/coremark
 	url = https://github.com/eembc/coremark.git
+[submodule "test/programs/c-ray"]
+	path = test/programs/c-ray
+	url = https://github.com/jtsiomb/c-ray.git
diff --git a/test/programs/c-ray b/test/programs/c-ray
new file mode 160000
index 000000000..6443d9118
--- /dev/null
+++ b/test/programs/c-ray
@@ -0,0 +1 @@
+Subproject commit 6443d91189a7317385b15af5292c4cf5b3863667