diff --git a/lib/plugins/aws/provider/awsProvider.js b/lib/plugins/aws/provider/awsProvider.js
index 99b973f82b8..0cd59925b4f 100644
--- a/lib/plugins/aws/provider/awsProvider.js
+++ b/lib/plugins/aws/provider/awsProvider.js
@@ -227,7 +227,9 @@ class AwsProvider {
             Properties: { type: 'object' },
             CreationPolicy: { type: 'object' },
             DeletionPolicy: { type: 'string' },
-            DependsOn: { type: 'array', items: { type: 'string' } },
+            DependsOn: {
+              oneOf: [{ type: 'string' }, { type: 'array', items: { type: 'string' } }],
+            },
             Metadata: { type: 'object' },
             UpdatePolicy: { type: 'object' },
             UpdateReplacePolicy: { type: 'string' },