diff --git a/.gitmodules b/.gitmodules
index eb8ca94..f564181 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -167,3 +167,6 @@
 [submodule "2023/mcbloch"]
 	path = 2023/mcbloch
 	url = https://github.com/mcbloch/AoC2023
+[submodule "2023/timpy"]
+	path = 2023/timpy
+	url = https://github.com/timodw/aoc_2023
diff --git a/2023/timpy b/2023/timpy
new file mode 160000
index 0000000..957b10b
--- /dev/null
+++ b/2023/timpy
@@ -0,0 +1 @@
+Subproject commit 957b10b41ad677a4c021b77a433aac986fba2bcf