diff --git a/.gitmodules b/.gitmodules
index cb59823..0dd3c7c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,6 @@ branch = sledge
 path = runtime/tests/speechtotext
 url = https://github.com/gwsystems/speechtotext.git
 branch = sledge
+[submodule "runtime/tests/C-Image-Manip"]
+path = runtime/tests/C-Image-Manip
+url = https://github.com/lyuxiaosu/C-Image-Manip.git
diff --git a/runtime/tests/C-Image-Manip b/runtime/tests/C-Image-Manip
new file mode 160000
index 0000000..9c30d84
--- /dev/null
+++ b/runtime/tests/C-Image-Manip
@@ -0,0 +1 @@
+Subproject commit 9c30d84d708d9713ac1990330f033189c3d88b39