diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..b65b61a1a
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "okapi-core/src/main/raml/raml-util"]
+	path = okapi-core/src/main/raml/raml-util
+	url = https://github.com/folio-org/raml.git
diff --git a/okapi-core/src/main/raml/raml-util b/okapi-core/src/main/raml/raml-util
new file mode 160000
index 000000000..f64234a0f
--- /dev/null
+++ b/okapi-core/src/main/raml/raml-util
@@ -0,0 +1 @@
+Subproject commit f64234a0f482afdc5d2ea9e1e9f9ff33765f897e