diff --git a/manifests/init.pp b/manifests/init.pp
index 0f944f8..4ef2030 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -112,4 +112,8 @@ class mastodon (
     provider => 'git',
     require  => User['mastodon'],
   }
+  exec { 'configure_rbenv':
+    command => "${mastodon_home}/.rbenv/src/configure",
+    creates => "${mastodon_home}/.rbenv/src/Makefile",
+  }
 }