diff --git a/lib/config/definitions.js b/lib/config/definitions.js
index 53d929ea67b38fa536f7886b9b58ec67d86693ee..ebbee00a916ea2ed5511a311b76ea4a3512bc2a6 100644
--- a/lib/config/definitions.js
+++ b/lib/config/definitions.js
@@ -1414,7 +1414,7 @@ const options = [
     description:
       'Options to suppress various types of warnings and other notifications',
     type: 'list',
-    default: [],
+    default: ['deprecationWarningIssues'],
     allowedValues: [
       'prIgnoreNotification',
       'prEditNotification',