diff --git a/lib/configSchema.js b/lib/configSchema.js
index 587410d2321..fbf49a22dea 100644
--- a/lib/configSchema.js
+++ b/lib/configSchema.js
@@ -32,7 +32,20 @@ const schema = {
       required: [],
       // User is free to add any properties for its own purpose
     },
-    plugins: { type: 'array', items: { type: 'string' } },
+    plugins: {
+      anyOf: [
+        {
+          type: 'object',
+          properties: {
+            localPath: { type: 'string' },
+            modules: { type: 'array', items: { type: 'string' } },
+          },
+          additionalProperties: false,
+          required: ['modules'],
+        },
+        { type: 'array', items: { type: 'string' } },
+      ],
+    },
 
     functions: {
       type: 'object',