diff --git a/.gitmodules b/.gitmodules
index 4564bbe..eb8ca94 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -164,3 +164,6 @@
 [submodule "2023/chvp"]
 	path = 2023/chvp
 	url = https://github.com/chvp/aoc2023.git
+[submodule "2023/mcbloch"]
+	path = 2023/mcbloch
+	url = https://github.com/mcbloch/AoC2023
diff --git a/2023/mcbloch b/2023/mcbloch
new file mode 160000
index 0000000..342e0db
--- /dev/null
+++ b/2023/mcbloch
@@ -0,0 +1 @@
+Subproject commit 342e0dbb1d4b71bc6771f61078217f44b5591239