diff --git a/lib/manager/npm/extract/index.js b/lib/manager/npm/extract/index.js
index 9d4919e29d3521d5d1ad85cc21c938c4c187970e..3da53a99edaca50fdde05b48d6794b4abf7075b2 100644
--- a/lib/manager/npm/extract/index.js
+++ b/lib/manager/npm/extract/index.js
@@ -95,7 +95,7 @@ async function extractPackageFile(content, fileName, config) {
     );
     if (npmrc && npmrc.includes('package-lock')) {
       logger.info('Stripping package-lock setting from npmrc');
-      npmrc = npmrc.replace(/(^|\n)package-lock.*?(\n|$)/g, '');
+      npmrc = npmrc.replace(/(^|\n)package-lock.*?(\n|$)/g, '\n');
     }
     if (npmrc) {
       if (npmrc.includes('=${') && !(global.trustLevel === 'high')) {