diff --git a/lib/config/validation.ts b/lib/config/validation.ts
index fded1fe4f27956c26a92d39693fb89379bb24386..1d6c437636a6e8e152e9cc16c37b3dadbf1a2a05 100644
--- a/lib/config/validation.ts
+++ b/lib/config/validation.ts
@@ -612,7 +612,12 @@ export async function validateConfig(
                 }
               }
             } else if (
-              ['customEnvVariables', 'migratePresets', 'secrets'].includes(key)
+              [
+                'customEnvVariables',
+                'migratePresets',
+                'productLinks',
+                'secrets',
+              ].includes(key)
             ) {
               const res = validatePlainObject(val);
               if (res !== true) {