diff --git a/core/lib/Drupal/Core/Field/BaseFieldDefinition.php b/core/lib/Drupal/Core/Field/BaseFieldDefinition.php
index 594f31d..54d2024 100644
--- a/core/lib/Drupal/Core/Field/BaseFieldDefinition.php
+++ b/core/lib/Drupal/Core/Field/BaseFieldDefinition.php
@@ -579,7 +579,7 @@ protected function getFieldItemClass() {
   public function __sleep() {
     // Do not serialize the statically cached property definitions.
     $vars = get_object_vars($this);
-    unset($vars['propertyDefinitions']);
+    unset($vars['propertyDefinitions'], $vars['typedDataManager']);
     return array_keys($vars);
   }
 
diff --git a/core/lib/Drupal/Core/TypedData/ComplexDataDefinitionBase.php b/core/lib/Drupal/Core/TypedData/ComplexDataDefinitionBase.php
index 0acdba4..0002497 100644
--- a/core/lib/Drupal/Core/TypedData/ComplexDataDefinitionBase.php
+++ b/core/lib/Drupal/Core/TypedData/ComplexDataDefinitionBase.php
@@ -42,7 +42,7 @@ public function getMainPropertyName() {
   public function __sleep() {
     // Do not serialize the cached property definitions.
     $vars = get_object_vars($this);
-    unset($vars['propertyDefinitions']);
+    unset($vars['propertyDefinitions'], $vars['typedDataManager']);
     return array_keys($vars);
   }
 
diff --git a/core/lib/Drupal/Core/TypedData/DataDefinition.php b/core/lib/Drupal/Core/TypedData/DataDefinition.php
index 07b78bf..4809564 100644
--- a/core/lib/Drupal/Core/TypedData/DataDefinition.php
+++ b/core/lib/Drupal/Core/TypedData/DataDefinition.php
@@ -9,7 +9,6 @@
  */
 class DataDefinition implements DataDefinitionInterface, \ArrayAccess {
 
-  use DependencySerializationTrait;
   use TypedDataTrait;
 
   /**
@@ -345,4 +344,14 @@ public function toArray() {
     return $this->definition;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function __sleep() {
+    // Never serialize the typed data manager.
+    $vars = get_object_vars($this);
+    unset($vars['typedDataManager']);
+    return array_keys($vars);
+  }
+
 }