diff --git a/.gitmodules b/.gitmodules
index 6e6d3f0..21367a0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "third_party/benchmark"]
 	path = third_party/benchmark
 	url = https://github.com/google/benchmark
+[submodule "YCSB-cpp"]
+	path = YCSB-cpp
+	url = https://github.com/ls4154/YCSB-cpp.git
diff --git a/YCSB-cpp b/YCSB-cpp
new file mode 160000
index 0000000..3f60b05
--- /dev/null
+++ b/YCSB-cpp
@@ -0,0 +1 @@
+Subproject commit 3f60b05ba0c07487731daa1b629e709f08e5bd78