diff --git a/.gitmodules b/.gitmodules
index 0a0faae..42bfa41 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "lib/breezefield"]
 	path = lib/breezefield
 	url = https://github.com/HDictus/breezefield
+[submodule "lib/hc"]
+	path = lib/hc
+	url = https://github.com/vrld/HC
diff --git a/lib/hc b/lib/hc
new file mode 160000
index 0000000..eb1f285
--- /dev/null
+++ b/lib/hc
@@ -0,0 +1 @@
+Subproject commit eb1f285cb1cc4d951d90c92b64a4fc85e7ed06bd