diff --git a/Vagrantfile b/Vagrantfile
index 940a82a..79d8cca 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -12,7 +12,8 @@ MEMORY = ENV.fetch("VM_SIZE", "8192").to_i
 
 # Every Vagrant development environment requires a box. You can search for
 # boxes at https://vagrantcloud.com/search.
-BOX = ENV.fetch("VM_BOX", "generic/centos8")
+# BOX = ENV.fetch("VM_BOX", "generic/centos8")
+BOX = ENV.fetch("VM_BOX", "generic/ubuntu2004")
 
 # Machine host name
 HOSTNAME = "tobiko"