diff --git a/forward_engineering/api.js b/forward_engineering/api.js
index 48579c9..f4b1c0d 100644
--- a/forward_engineering/api.js
+++ b/forward_engineering/api.js
@@ -11,6 +11,7 @@ const {
 	resolveNamespaceReferences,
 	clearDefinitions,
 	resolveSchemaUdt,
+	getDefinitionsOfCollectionReferences,
 } = require('./helpers/udtHelper');
 const convertSchema = require('./helpers/convertJsonSchemaToAvro');
 const {
@@ -42,7 +43,10 @@ const generateModelScript = (data, logger, cb, app) => {
 				externalDefinitions: parseJson(externalDefinitions),
 			}));
 
-		const script = handleCollectionReferences(entities, options).map(entity => {
+		const entitiesWithHandledCollectionReferences = handleCollectionReferences(entities, options);
+		const collectionDefinitions = getDefinitionsOfCollectionReferences();
+
+		const script = entitiesWithHandledCollectionReferences.map(entity => {
 			try {
 				const { containerData, entityData, jsonSchema, internalDefinitions, references } = entity;
 
@@ -50,6 +54,7 @@ const generateModelScript = (data, logger, cb, app) => {
 				addDefinitions(convertedExternalDefinitions);
 				addDefinitions(convertedModelDefinitions);
 				setUserDefinedTypes(internalDefinitions, true);
+				addDefinitions(collectionDefinitions);
 				resetDefinitionsUsage();
 
 				const settings = getSettings({ containerData, entityData, modelData, references });
diff --git a/forward_engineering/helpers/udtHelper.js b/forward_engineering/helpers/udtHelper.js
index 56f206b..1eac587 100644
--- a/forward_engineering/helpers/udtHelper.js
+++ b/forward_engineering/helpers/udtHelper.js
@@ -369,6 +369,10 @@ const getExternalReferenceDefinition = (field, externalDefinitions) => {
 	});
 };
 
+const getDefinitionsOfCollectionReferences = () => {
+	return Object.fromEntries(Object.entries(udt).filter(([key, value]) => value?.isCollectionReference));
+};
+
 module.exports = {
 	resolveUdt,
 	resolveSchemaUdt,
@@ -379,4 +383,5 @@ module.exports = {
 	resetDefinitionsUsage,
 	convertCollectionReferences,
 	resolveNamespaceReferences,
+	getDefinitionsOfCollectionReferences,
 };