Is it possible to bind arrays of literals in sqlite3-ruby?

Question

I'd like to execute the following sort of query through sqlite3-ruby:

SELECT * FROM foo WHERE bar IN (:items)

and bind :items to one or many literals. Is this possible? The obvious technique of passing the list of literals as an array as follows doesn't seem to work:

db.execute("SELECT * FROM foo WHERE bar IN (:items)", :items=>[3,1])

(In the above example, only the first value in the array is bound to :items.)