diff --git a/Puppetfile b/Puppetfile
index 79db490..192f5ae 100644
--- a/Puppetfile
+++ b/Puppetfile
@@ -5,7 +5,7 @@ forge "http://forge.puppetlabs.com"
 mod "puppetlabs/inifile",     '1.5.0'
 mod "puppetlabs/stdlib",      '4.11.0'
 mod "puppetlabs/concat",      '2.1.0'
-mod "puppetlabs/ntp",	      'latest'
+mod "puppetlabs/ntp",	      :latest
 
 # Modules from Git
 # Examples: https://github.com/puppetlabs/r10k/blob/master/doc/puppetfile.mkd#examples