diff --git a/manifests/dependencies.pp b/manifests/dependencies.pp
index bc1e815c..8f9ebe58 100644
--- a/manifests/dependencies.pp
+++ b/manifests/dependencies.pp
@@ -1,7 +1,7 @@
 class rvm::dependencies {
   case $::operatingsystem {
     Ubuntu,Debian: { require rvm::dependencies::ubuntu }
-    CentOS,RedHat,Amazon: { require rvm::dependencies::centos }
+    CentOS,RedHat,Amazon,Scientific: { require rvm::dependencies::centos }
     OracleLinux,RedHat: { require rvm::dependencies::oraclelinux }
   }
 }
diff --git a/manifests/passenger/apache.pp b/manifests/passenger/apache.pp
index 7595c8ef..31da11bd 100644
--- a/manifests/passenger/apache.pp
+++ b/manifests/passenger/apache.pp
@@ -11,7 +11,7 @@
 
   case $::operatingsystem {
     Ubuntu,Debian: { include rvm::passenger::apache::ubuntu::pre }
-    CentOS,RedHat: { include rvm::passenger::apache::centos::pre }
+    CentOS,RedHat,Scientific: { include rvm::passenger::apache::centos::pre }
   }
 
   class {
@@ -43,7 +43,7 @@
         }
       }
     }
-    CentOS,RedHat: {
+    CentOS,RedHat,Scientific: {
       if !defined(Class['rvm::passenger::apache::centos::post']) {
         class { 'rvm::passenger::apache::centos::post':
           ruby_version       => $ruby_version,