diff --git a/src/GraphQL/Resolvers/Resolver.php b/src/GraphQL/Resolvers/Resolver.php
index bcc23190..91ecd150 100644
--- a/src/GraphQL/Resolvers/Resolver.php
+++ b/src/GraphQL/Resolvers/Resolver.php
@@ -12,9 +12,21 @@
 use SilverStripe\ORM\ValidationException;
 use InvalidArgumentException;
 use Exception;
+use SilverStripe\Dev\Deprecation;
 
+/**
+ * @deprecated 5.3.0 Will be removed without equivalent functionality to replace it
+ */
 class Resolver
 {
+    public function __construct()
+    {
+        Deprecation::withNoReplacement(function () {
+            $message = 'Will be removed without equivalent functionality to replace it';
+            Deprecation::notice('5.3.0', $message, Deprecation::SCOPE_CLASS);
+        });
+    }
+
     /**
      * @param $value
      * @return object
diff --git a/src/Models/BaseElement.php b/src/Models/BaseElement.php
index 6470eda0..37e2ebbd 100644
--- a/src/Models/BaseElement.php
+++ b/src/Models/BaseElement.php
@@ -1280,9 +1280,13 @@ public function EvenOdd()
 
     /**
      * @return string
+     * @deprecated 5.3.0 Will be removed without equivalent functionality to replace it
      */
     public static function getGraphQLTypeName(): string
     {
+        Deprecation::withNoReplacement(function () {
+            Deprecation::notice('5.3.0', 'Will be removed without equivalent functionality to replace it');
+        });
         // For GraphQL 3, use the static schema type name - except for BaseElement for which this is inconsistent.
         if (class_exists(StaticSchema::class) && static::class !== BaseElement::class) {
             return StaticSchema::inst()->typeNameForDataObject(static::class);
diff --git a/src/ORM/FieldType/DBObjectType.php b/src/ORM/FieldType/DBObjectType.php
index f91710ed..f4ade846 100644
--- a/src/ORM/FieldType/DBObjectType.php
+++ b/src/ORM/FieldType/DBObjectType.php
@@ -3,9 +3,21 @@
 
 use SilverStripe\GraphQL\Manager;
 use SilverStripe\ORM\FieldType\DBField;
+use SilverStripe\Dev\Deprecation;
 
+/**
+ * @deprecated 5.3.0 Will be removed without equivalent functionality to replace it
+ */
 class DBObjectType extends DBField
 {
+    public function __construct()
+    {
+        Deprecation::withNoReplacement(function () {
+            $message = 'Will be removed without equivalent functionality to replace it';
+            Deprecation::notice('5.3.0', $message, Deprecation::SCOPE_CLASS);
+        });
+    }
+
     /**
      * Add the field to the underlying database.
      */