diff --git a/.gitmodules b/.gitmodules
index a99eb86..e104984 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -445,3 +445,6 @@
 [submodule "ruby-dry-transaction"]
 	path = ruby-dry-transaction
 	url = ssh://aur@aur.archlinux.org/ruby-dry-transaction.git
+[submodule "ruby-dry-transformer"]
+	path = ruby-dry-transformer
+	url = ssh://aur@aur.archlinux.org/ruby-dry-transformer.git
diff --git a/ruby-dry-transformer b/ruby-dry-transformer
new file mode 160000
index 0000000..8fa921d
--- /dev/null
+++ b/ruby-dry-transformer
@@ -0,0 +1 @@
+Subproject commit 8fa921d0d87b72d2e7475a0f8a52eb075999e1e0