diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
index cd870f2..e8dcff4 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
@@ -35,6 +35,13 @@
   public $status = TRUE;
 
   /**
+   * The UUID for this entity.
+   *
+   * @var string
+   */
+  public $uuid;
+
+  /**
    * Whether the config is being created, updated or deleted through the
    * import process.
    *
diff --git a/core/modules/image/config/image.style.large.yml b/core/modules/image/config/image.style.large.yml
index b61ac07..1f7c10c 100644
--- a/core/modules/image/config/image.style.large.yml
+++ b/core/modules/image/config/image.style.large.yml
@@ -8,4 +8,5 @@ effects:
       height: 480
       upscale: true
     weight: 0
+    uuid: ddd73aa7-4bd6-4c85-b600-bdf2b1628d1d
 langcode: en
diff --git a/core/modules/image/config/image.style.medium.yml b/core/modules/image/config/image.style.medium.yml
index f50b704..77e0d2a 100644
--- a/core/modules/image/config/image.style.medium.yml
+++ b/core/modules/image/config/image.style.medium.yml
@@ -8,4 +8,5 @@ effects:
       height: 220
       upscale: true
     weight: 0
+    uuid: bddf0d06-42f9-4c75-a700-a33cafa25ea0
 langcode: en
diff --git a/core/modules/image/config/image.style.thumbnail.yml b/core/modules/image/config/image.style.thumbnail.yml
index 639450b..22b5671 100644
--- a/core/modules/image/config/image.style.thumbnail.yml
+++ b/core/modules/image/config/image.style.thumbnail.yml
@@ -8,4 +8,5 @@ effects:
       height: 100
       upscale: true
     weight: 0
+    uuid: 1cfec298-8620-4749-b100-ccb6c4500779
 langcode: en