diff --git a/.gitmodules b/.gitmodules
index 1190757..90a50b3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,8 @@
 	url = https://github.com/rmontanana/folding
 	main = main
 	update = merge
+[submodule "tests/lib/catch2"]
+	path = tests/lib/catch2
+        url = https://github.com/catchorg/Catch2.git
+	main = main
+	update = merge