```ruby
# Add the opscode APT source for chef
default[:apt][:sources] = node[:apt][:sources] | ["opscode"]

# Set the default server version
default[:chef][:server][:version] = "12.0.8-1"

# Set the default client version
default[:chef][:client][:version] = "12.13.37-1"
```

Update chef client to 12.14.89
user
```ruby
# Add the opscode APT source for chef
default[:apt][:sources] = node[:apt][:sources] | ["opscode"]

# Set the default server version
default[:chef][:server][:version] = "12.0.8-1"

# Set the default client version
default[:chef][:client][:version] = "12.14.89-1"
```
assistant