symfony
diff --git a/‎src/Symfony/Component/Serializer/CHANGELOG.md
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diff --git a/‎src/Symfony/Component/Serializer/Encoder/SerializerAwareEncoder.php
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diff --git a/‎src/Symfony/Component/Serializer/Normalizer/SerializerAwareNormalizer.php
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diff --git a/‎src/Symfony/Component/Serializer/Serializer.php
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@@ -1,6 +1,14 @@
 CHANGELOG
 =========
 
+4.0.0
+-----
+
+ * removed the `SerializerAwareEncoder` and `SerializerAwareNormalizer` classes,
+   use the `SerializerAwareTrait` instead
+ * removed the `Serializer::$normalizerCache` and `Serializer::$denormalizerCache`
+   properties
+
 3.3.0
 -----
 
 
@@ -54,20 +54,6 @@ class Serializer implements SerializerInterface, NormalizerInterface, Denormaliz
      */
     protected $normalizers = array();
 
-    /**
-     * @var array
-     *
-     * @deprecated since 3.1 will be removed in 4.0
-     */
-    protected $normalizerCache = array();
-
-    /**
-     * @var array
-     *
-     * @deprecated since 3.1 will be removed in 4.0
-     */
-    protected $denormalizerCache = array();
-
     public function __construct(array $normalizers = array(), array $encoders = array())
     {
         foreach ($normalizers as $normalizer) {