diff --git a/.gitmodules b/.gitmodules
index 6b9d696..1796c40 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "misc/missing_semester_2020"]
 	path = misc/missing_semester_2020
 	url = ssh://git@forgejo.ronnyabraham.com:222/notes/compsci-missing_semester_2020.git
+[submodule "ai/herk"]
+	path = ai/herk
+	url = ssh://git@forgejo.ronnyabraham.com:222/notes/compsci_ai_herk.git
diff --git a/ai/herk b/ai/herk
new file mode 160000
index 0000000..ba595f9
--- /dev/null
+++ b/ai/herk
@@ -0,0 +1 @@
+Subproject commit ba595f962bd54dd9650b3f6fc18781a1ea4deeba