diff --git a/ansible/install/group_vars/all.yml b/ansible/install/group_vars/all.yml
index bbd508989..b7bcc7304 100644
--- a/ansible/install/group_vars/all.yml
+++ b/ansible/install/group_vars/all.yml
@@ -25,6 +25,9 @@ browbeat_venv: /home/stack/browbeat-venv
 # The default Rally venv
 rally_venv: /home/stack/rally-venv
 
+# Rally version to install
+rally_version: 0.5.0
+
 # The default Shaker venv
 shaker_venv: /home/stack/shaker-venv
 
diff --git a/ansible/install/roles/browbeat/tasks/main.yml b/ansible/install/roles/browbeat/tasks/main.yml
index d8abab8ed..dd9371217 100644
--- a/ansible/install/roles/browbeat/tasks/main.yml
+++ b/ansible/install/roles/browbeat/tasks/main.yml
@@ -117,7 +117,7 @@
      virtualenv={{ perfkit_venv }}
 
 - name: Install rally into rally-venv
-  pip: name=rally version=0.5.0 virtualenv={{ rally_venv }}
+  pip: name=rally version={{ rally_version }} virtualenv={{ rally_venv }}
 
 - name: Install elasticsearch into rally-venv
   pip: name=elasticsearch virtualenv={{ rally_venv }}