diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b7beac2..2d5393f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## [4.0.0](https://github.com/algolia/algoliasearch-client-php/compare/4.0.0-beta.15...4.0.0)
+
+New major version released! Browse [our documentation](https://www.algolia.com/doc/libraries/php)
+
+- [22348001a](https://github.com/algolia/api-clients-automation/commit/22348001a) fix(specs): required ingestion search params ([#3516](https://github.com/algolia/api-clients-automation/pull/3516)) by [@shortcuts](https://github.com/shortcuts/)
+
 ## [4.0.0-beta.15](https://github.com/algolia/algoliasearch-client-php/compare/4.0.0-beta.14...4.0.0-beta.15)
 
 - [7d2ab99ce](https://github.com/algolia/api-clients-automation/commit/7d2ab99ce) feat(specs): add authentications to ingestion transformations ([#3494](https://github.com/algolia/api-clients-automation/pull/3494)) by [@shortcuts](https://github.com/shortcuts/)
diff --git a/composer.json b/composer.json
index 44b6f9c2..af40e1a0 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "algolia/algoliasearch-client-php",
-    "version": "4.0.0-beta.15",
+    "version": "4.0.0",
     "description": "API powering the features of Algolia.",
     "keywords": [
         "openapitools",
diff --git a/lib/Algolia.php b/lib/Algolia.php
index 6c371382..50b96cb7 100644
--- a/lib/Algolia.php
+++ b/lib/Algolia.php
@@ -14,7 +14,7 @@
 
 final class Algolia
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * Holds an instance of the simple cache repository (PSR-16).
diff --git a/lib/Api/AbtestingClient.php b/lib/Api/AbtestingClient.php
index 69e47766..5de19ecd 100644
--- a/lib/Api/AbtestingClient.php
+++ b/lib/Api/AbtestingClient.php
@@ -20,7 +20,7 @@
  */
 class AbtestingClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/AnalyticsClient.php b/lib/Api/AnalyticsClient.php
index 966aa25d..734257fc 100644
--- a/lib/Api/AnalyticsClient.php
+++ b/lib/Api/AnalyticsClient.php
@@ -19,7 +19,7 @@
  */
 class AnalyticsClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/IngestionClient.php b/lib/Api/IngestionClient.php
index d0b1c0c0..007b8b01 100644
--- a/lib/Api/IngestionClient.php
+++ b/lib/Api/IngestionClient.php
@@ -40,7 +40,7 @@
  */
 class IngestionClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/InsightsClient.php b/lib/Api/InsightsClient.php
index 2dfad3da..176f688b 100644
--- a/lib/Api/InsightsClient.php
+++ b/lib/Api/InsightsClient.php
@@ -20,7 +20,7 @@
  */
 class InsightsClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/MonitoringClient.php b/lib/Api/MonitoringClient.php
index 37bf1be7..0732dc45 100644
--- a/lib/Api/MonitoringClient.php
+++ b/lib/Api/MonitoringClient.php
@@ -19,7 +19,7 @@
  */
 class MonitoringClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/PersonalizationClient.php b/lib/Api/PersonalizationClient.php
index ecac66e9..c2781981 100644
--- a/lib/Api/PersonalizationClient.php
+++ b/lib/Api/PersonalizationClient.php
@@ -20,7 +20,7 @@
  */
 class PersonalizationClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/QuerySuggestionsClient.php b/lib/Api/QuerySuggestionsClient.php
index b53354b5..b7be9b3d 100644
--- a/lib/Api/QuerySuggestionsClient.php
+++ b/lib/Api/QuerySuggestionsClient.php
@@ -21,7 +21,7 @@
  */
 class QuerySuggestionsClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/RecommendClient.php b/lib/Api/RecommendClient.php
index 3fe6fe49..ca4e986f 100644
--- a/lib/Api/RecommendClient.php
+++ b/lib/Api/RecommendClient.php
@@ -21,7 +21,7 @@
  */
 class RecommendClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/SearchClient.php b/lib/Api/SearchClient.php
index e505f6db..cb721ae1 100644
--- a/lib/Api/SearchClient.php
+++ b/lib/Api/SearchClient.php
@@ -47,7 +47,7 @@
  */
 class SearchClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface
diff --git a/lib/Api/UsageClient.php b/lib/Api/UsageClient.php
index dccfac60..600eadc5 100644
--- a/lib/Api/UsageClient.php
+++ b/lib/Api/UsageClient.php
@@ -19,7 +19,7 @@
  */
 class UsageClient
 {
-    public const VERSION = '4.0.0-beta.15';
+    public const VERSION = '4.0.0';
 
     /**
      * @var ApiWrapperInterface