diff --git a/manifests/source.pp b/manifests/source.pp
index 643134a..638242d 100644
--- a/manifests/source.pp
+++ b/manifests/source.pp
@@ -19,5 +19,5 @@ class alternc::source {
   Apt::Source['alternc']
   -> Package['alternc']
   Apt::Source['alternc']
-  ~> Class[Apt::Update]
+  ~> Class['apt::update']
 }