diff --git a/package.json b/package.json
index 35d05f82b4..74beac72fb 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "yarn",
   "installationMethod": "unknown",
-  "version": "1.18.0",
+  "version": "1.19.0-0",
   "license": "BSD-2-Clause",
   "preferGlobal": true,
   "description": "📦🐈 Fast, reliable, and secure dependency management.",
diff --git a/src/lockfile/index.js b/src/lockfile/index.js
index 808cc81943..ab6e9f970c 100644
--- a/src/lockfile/index.js
+++ b/src/lockfile/index.js
@@ -179,6 +179,11 @@ export default class Lockfile {
       reporter.info(reporter.lang('noLockfileFound'));
     }
 
+    if (lockfile.__metadata) {
+      const lockfilev2 = lockfile;
+      lockfile = {};
+    }
+
     return new Lockfile({cache: lockfile, source: rawLockfile, parseResultType: parseResult && parseResult.type});
   }