diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..00cc27e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "deps/Catch2"]
+	path = deps/Catch2
+	url = https://github.com/catchorg/Catch2.git
diff --git a/deps/Catch2 b/deps/Catch2
new file mode 160000
index 0000000..31ee3be
--- /dev/null
+++ b/deps/Catch2
@@ -0,0 +1 @@
+Subproject commit 31ee3beb0a474463e0101674c22f2fef0311d601