diff --git a/_config.php b/_config.php
index 936bd82..b3d9bbc 100644
--- a/_config.php
+++ b/_config.php
@@ -1,5 +1 @@
 <?php
-
-use SilverStripe\Dev\Deprecation;
-
-Deprecation::notification_version('1.4.0', 'sqlite3');