diff --git a/debian/aegir3-provision.postinst b/debian/aegir3-provision.postinst
index b63dddbda1942b05ef94cdcb175cbb4a5ce35f07..677ceba79ad40537b430c235f60a765a0f1142b9 100644
--- a/debian/aegir3-provision.postinst
+++ b/debian/aegir3-provision.postinst
@@ -56,7 +56,7 @@ case "$1" in
         mv composer.phar /usr/local/bin/composer
 
         # Install Drush.
-        su -c "composer global require drush/drush:7.*" aegir
+        su -c "composer global require drush/drush:6.*" aegir
 
         # Add composer's bin dir to the $PATH.
         echo "export PATH=\"\$HOME/.composer/vendor/bin:\$PATH\"" >>  ~aegir/.bashrc
diff --git a/upgrade.sh.txt b/upgrade.sh.txt
index b5f9a0f912b3632cc0118d43c51566a5740b0d7d..842040dc258f3d4bfdf652d7bfe7e1703c3a597b 100644
--- a/upgrade.sh.txt
+++ b/upgrade.sh.txt
@@ -10,7 +10,7 @@
 
 # Basic variables, change before running.
 AEGIR_VERSION="7.x-3.x"
-NEW_DRUSH_VERSION=7.0.0
+NEW_DRUSH_VERSION=6.5.0
 
 # Extra variables, no changes needed for most use-cases.
 DRUSH_DIR=$HOME/drush