diff --git a/.gitmodules b/.gitmodules
index 69779f0..b5103f7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "modules/common"]
 	path = modules/common
 	url = gogs@lattuga.net:opuppet/module-common.git
+[submodule "modules/concat"]
+	path = modules/concat
+	url = gogs@lattuga.net:opuppet/module-concat.git
diff --git a/modules/concat b/modules/concat
new file mode 160000
index 0000000..7bb3669
--- /dev/null
+++ b/modules/concat
@@ -0,0 +1 @@
+Subproject commit 7bb36698846f144c14dda46bc8378e67065bc388