diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdbbacd..02b539a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 [comment]: <> (When bumping [pc:VERSION_LATEST_RELEASE] create a new entry below)
 ### Unreleased version
+### 4.0.0
+- Add support for sparse indexes
+- Generate code based on 2025-01 open-api spec
+
 ### 3.1.0
 - Add support to pass base url for control and data plane operations
 
diff --git a/LICENSE b/LICENSE
index 261eeb9..075fb10 100644
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2023 Pinecone Systems, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/README.md b/README.md
index ee17999..679cc02 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Maven:
 <dependency>
   <groupId>io.pinecone</groupId>
   <artifactId>pinecone-client</artifactId>
-  <version>3.0.0</version>
+  <version>4.0.0</version>
 </dependency>
 ```
 
@@ -23,12 +23,12 @@ Maven:
 
 Gradle:
 ```
-implementation "io.pinecone:pinecone-client:3.0.0"
+implementation "io.pinecone:pinecone-client:4.0.0"
 ```
 
 [comment]: <> (^ [pc:VERSION_LATEST_RELEASE])
 
-Alternatively, you can use our standalone uberjar [pinecone-client-3.0.0-all.jar](https://repo1.maven.org/maven2/io/pinecone/pinecone-client/3.0.0/pinecone-client-3.0.0-all.jar), which bundles the Pinecone
+Alternatively, you can use our standalone uberjar [pinecone-client-4.0.0-all.jar](https://repo1.maven.org/maven2/io/pinecone/pinecone-client/4.0.0/pinecone-client-4.0.0-all.jar), which bundles the Pinecone
 SDK and all dependencies together. You can include this in your classpath like you do with any 3rd party JAR without
 having to obtain the *pinecone-client* dependencies separately.
 
@@ -202,7 +202,6 @@ import java.util.HashMap;
 Pinecone pinecone = new Pinecone.Builder("PINECONE_API_KEY").build();
         
 String indexName = "example-index";
-int dimension = 1538;
 String cloud = "aws";
 String region = "us-east-1";
 HashMap<String, String> tags = new HashMap<>();
diff --git a/gradle.properties b/gradle.properties
index a9c6f41..bea2d8d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-pineconeClientVersion = 3.1.0
+pineconeClientVersion = 4.0.0
diff --git a/src/main/java/io/pinecone/commons/Constants.java b/src/main/java/io/pinecone/commons/Constants.java
index 4344f11..5e6a83e 100644
--- a/src/main/java/io/pinecone/commons/Constants.java
+++ b/src/main/java/io/pinecone/commons/Constants.java
@@ -1,5 +1,5 @@
 package io.pinecone.commons;
 
 public class Constants {
-    public static final String pineconeClientVersion = "v3.1.0";
+    public static final String pineconeClientVersion = "v4.0.0";
 }