diff --git a/bootstrap/solar-master.json b/bootstrap/solar-master.json
index 7465a0ae..5db9e15c 100644
--- a/bootstrap/solar-master.json
+++ b/bootstrap/solar-master.json
@@ -14,7 +14,7 @@
     "iso_url": "http://releases.ubuntu.com/14.04/ubuntu-14.04.3-server-amd64.iso",
     "iso_checksum": "9e5fecc94b3925bededed0fdca1bd417",
     "custom_script": ".",
-    "disk_size": "4000",
+    "disk_size": "4500",
     "mem_size": "512",
     "vcpu_num": "1",
     "ansible_config_path": "/etc/ansible",