diff --git a/lib/workers/branch/yarn.js b/lib/workers/branch/yarn.js
index 3b9b4efcf19e4c7919d8c3670cfc47b483997f4a..4c50fa5322d0ed7c43c968cd22eaeedb8b3c6761 100644
--- a/lib/workers/branch/yarn.js
+++ b/lib/workers/branch/yarn.js
@@ -27,7 +27,11 @@ async function generateLockFile(
       fs.writeFileSync(path.join(tmpDir.name, '.npmrc'), npmrcContent);
     }
     if (yarnrcContent) {
-      fs.writeFileSync(path.join(tmpDir.name, '.yarnrc'), yarnrcContent);
+      const filteredYarnrc = yarnrcContent.replace(
+        '--install.pure-lockfile true',
+        ''
+      );
+      fs.writeFileSync(path.join(tmpDir.name, '.yarnrc'), filteredYarnrc);
     }
     logger.debug('Spawning yarn install');
     // Use an embedded yarn