diff --git a/.gitmodules b/.gitmodules
index 07ccc59..c0dfa53 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "pkgs/development/tools/npmlock2nix/src/npmlock2nix"]
 	path = pkgs/development/tools/npmlock2nix/src/npmlock2nix
 	url = https://github.com/milahu/npmlock2nix
+[submodule "lib/src/nix-yaml"]
+	path = lib/src/nix-yaml
+	url = https://github.com/milahu/nix-yaml
diff --git a/lib/src/nix-yaml b/lib/src/nix-yaml
new file mode 160000
index 0000000..af3ccd5
--- /dev/null
+++ b/lib/src/nix-yaml
@@ -0,0 +1 @@
+Subproject commit af3ccd5b8c433f1a21d56dc4deb351135bd3e69a