C# SQLite Parameterized Select Using LIKE

I am trying to do an SQL query such as

SELECT * FROM [TABLE] WHERE hostname LIKE '%myhostname%';

This works fine in plain SQL, but when I use System.Data.SQLite in C#, it only works with a literal, not a parameter, such as

string sel = "SELECT * FROM [TABLE] WHERE hostname LIKE '%@host%'";
...
command.Parameters.AddWithValue("@host", "myhostname");

This returns no results.