diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2519afa..8754249 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,9 +2,9 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 # Changelog for Social Data Indexer Smart Executor Plugin
 
-## [v4.0.0-SNAPSHOT]
+## [v4.0.0]
 
-- updated for cassandra 4
+- Communicate with persistence through social networking service
 
 ## [v3.1.0-SNAPSHOT]
 
diff --git a/README.md b/README.md
index 1fb0dda..1aa7523 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,10 @@ See [Releases](https://code-repo.d4science.org/gCubeSystem/social-data-indexer-s
 * **Costantino Perciante** ISTI-CNR
 * **Luca Frosini** ([ORCID](https://orcid.org/0000-0003-3183-2291)) - [ISTI-CNR Infrascience Group](http://nemis.isti.cnr.it/groups/infrascience)
 
+## Maintainers
+
+* **Luca Frosini** ([ORCID](https://orcid.org/0000-0003-3183-2291)) - [ISTI-CNR Infrascience Group](http://nemis.isti.cnr.it/groups/infrascience)
+
 ## How to Cite this Software
 
 Tell people how to cite this software. 
diff --git a/pom.xml b/pom.xml
index ce71887..73a5546 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
 	</parent>
 	<groupId>org.gcube.socialnetworking</groupId>
 	<artifactId>social-data-indexer-se-plugin</artifactId>
-	<version>4.0.0-SNAPSHOT</version>
+	<version>4.0.0</version>
 	<name>Social Data Indexer Smart Executor Plugin</name>
 	<description>Social Data Indexer Smart Executor Plugin</description>
 
@@ -37,7 +37,7 @@
 			<dependency>
 				<groupId>org.gcube.vremanagement</groupId>
 				<artifactId>smart-executor-bom</artifactId>
-				<version>3.2.0-SNAPSHOT</version>
+				<version>3.2.0</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>