diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ac3f794
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "libs/json"]
+	path = libs/json
+	url = https://github.com/nlohmann/json.git
+	shallow = true
diff --git a/libs/json b/libs/json
new file mode 160000
index 0000000..f4658de
--- /dev/null
+++ b/libs/json
@@ -0,0 +1 @@
+Subproject commit f4658de2701f2290baf076bbbd8540260015518c