diff --git a/aegir.make b/aegir.make
index c98843487bf6b14b470feb6d0bc856256cd7665f..cb43be3a630887bc438dd0180cc27bec97b5d8c8 100644
--- a/aegir.make
+++ b/aegir.make
@@ -6,4 +6,4 @@ projects[drupal][type] = "core"
 projects[hostmaster][type] = "profile"
 projects[hostmaster][download][type] = "git"
 projects[hostmaster][download][url] = "http://git.drupal.org/project/hostmaster.git"
-projects[hostmaster][download][branch] = "6.x-1.x"
+projects[hostmaster][download][tag] = "6.x-1.0-rc4"
diff --git a/provision.info b/provision.info
index 43567aa49b14e8acb290edc2d178c9a9608ea1ce..847a267272d8a6d39adbd75bd23ced0ae65e349a 100644
--- a/provision.info
+++ b/provision.info
@@ -1,4 +1,4 @@
 name=Provision
 description="Aegir backend"
 
-version=6.x-1.x
+version=6.x-1.0-rc4
diff --git a/upgrade.sh.txt b/upgrade.sh.txt
index 19f293b78c8ba41563e50ba047e901954124b45d..ad0fa423bad7b394244233727d757063e97aa0c1 100644
--- a/upgrade.sh.txt
+++ b/upgrade.sh.txt
@@ -11,7 +11,7 @@
 ########################################################################
 
 # basic variables, change before running
-AEGIR_VERSION="6.x-1.0-rc3"
+AEGIR_VERSION="6.x-1.0-rc4"
 AEGIR_DOMAIN=aegir.example.com
 
 AEGIR_HOME="$HOME"