diff --git a/.gitmodules b/.gitmodules
index 1149d9b..2fad270 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -101,3 +101,9 @@
 [submodule "2021/Francis."]
 	path = 2021/Francis.
 	url = https://github.com/FKD13/AoC2021.git
+[submodule "2020/Lox"]
+	path = 2020/Lox.
+	url = https://github.com/Silox/2020-advent-of-code
+[submodule "2021/Lox"]
+	path = 2021/Lox.
+	url = https://github.com/Silox/2021-advent-of-code