diff --git a/dist/setup/index.js b/dist/setup/index.js
index aa4f708..b6c3e23 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -72945,7 +72945,7 @@ function writeRegistryToFile(registryUrl, fileLocation, alwaysAuth) {
         scope = '@' + scope;
     }
     if (scope) {
-        scope = scope.toLowerCase();
+        scope = scope.toLowerCase() + ':';
     }
     core.debug(`Setting auth in ${fileLocation}`);
     let newContents = '';
@@ -72953,16 +72953,14 @@ function writeRegistryToFile(registryUrl, fileLocation, alwaysAuth) {
         const curContents = fs.readFileSync(fileLocation, 'utf8');
         curContents.split(os.EOL).forEach((line) => {
             // Add current contents unless they are setting the registry
-            if (!line.toLowerCase().startsWith('registry')) {
+            if (!line.toLowerCase().startsWith(`${scope}registry`)) {
                 newContents += line + os.EOL;
             }
         });
     }
     // Remove http: or https: from front of registry.
     const authString = registryUrl.replace(/(^\w+:|^)/, '') + ':_authToken=${NODE_AUTH_TOKEN}';
-    const registryString = scope
-        ? `${scope}:registry=${registryUrl}`
-        : `registry=${registryUrl}`;
+    const registryString = `${scope}registry=${registryUrl}`;
     const alwaysAuthString = `always-auth=${alwaysAuth}`;
     newContents += `${authString}${os.EOL}${registryString}${os.EOL}${alwaysAuthString}`;
     fs.writeFileSync(fileLocation, newContents);