Doubles losing their decimal places in unit tests

So I am in the process of upgrading an old Laravel project from 5.3 to 5.4 (plan on going to 5.8), but I've run into a problem with my unit tests in which doubles are losing their decimal places.

Here's an example of one such test (yes my tests interact with a database):

$this->user->message_score = 3.42;
$this->user->save();
echo $this->user->fresh()->message_score; // 3

The migration for the table:

$table->double('message_score')->nullable();

Whatever number I set, the decimal places are lost. It isn't round up or down, 3.42 becomes 3, as does 3.99.

Tinker does not have the same issue.

I assume I am missing something simple.

Any help is appreciated.

EDIT

So I ran a migration to update the message_score precision and I am running into the same problem. The length displayed in the database before running the migration was (8,2) and the migration I ran pushed it up to (10,8). The migration is below:

DB::statement('ALTER TABLE `users` MODIFY `message_score` DOUBLE(10,8) NOT NULL DEFAULT 0.0;');