diff --git a/Puppetfile b/Puppetfile
index f104b3f7e..28ab8afe2 100644
--- a/Puppetfile
+++ b/Puppetfile
@@ -144,7 +144,7 @@ mod 'apt',
 
 mod 'concat',
   :git => 'https://github.com/puppetlabs/puppetlabs-concat',
-  :ref => '1.2.5'
+  :ref => '2.1.0'
 
 mod 'firewall',
   :git => 'https://github.com/puppetlabs/puppetlabs-firewall',
diff --git a/external_modules.txt b/external_modules.txt
index 48446d9c2..81f58ab1d 100644
--- a/external_modules.txt
+++ b/external_modules.txt
@@ -3,7 +3,7 @@ duritong/puppet-sysctl
 nanliu/puppet-staging
 puppetlabs/puppetlabs-apache
 puppetlabs/puppetlabs-apt
-puppetlabs/puppetlabs-concat,1.2.5
+puppetlabs/puppetlabs-concat
 puppetlabs/puppetlabs-firewall
 puppetlabs/puppetlabs-inifile
 puppetlabs/puppetlabs-mongodb