diff --git a/Puppetfile b/Puppetfile
index 2434b2234..0c6ee869d 100644
--- a/Puppetfile
+++ b/Puppetfile
@@ -212,7 +212,7 @@ mod 'rsync',
 
 mod 'stdlib',
   :git => 'https://github.com/puppetlabs/puppetlabs-stdlib',
-  :ref => '5.2.0'
+  :ref => 'v6.0.0'
 
 mod 'vcsrepo',
   :git => 'https://github.com/puppetlabs/puppetlabs-vcsrepo',