diff --git a/centos-7/template.json b/centos-7/template.json
index 1204a48..26ffa66 100644
--- a/centos-7/template.json
+++ b/centos-7/template.json
@@ -93,7 +93,7 @@
       "guest_additions_path": "VBoxGuestAdditions_{{.Version}}.iso",
       "virtualbox_version_file": ".vbox_version",
       "vboxmanage": [
-        [ "modifyvm", "{{.Name}}", "--memory", "512" ],
+        [ "modifyvm", "{{.Name}}", "--memory", "1024" ],
         [ "modifyvm", "{{.Name}}", "--cpus", "1" ]
       ]
     },