diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a2dca94..9e46eafe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,27 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## [5.4.0] - 2024-05-23
+## [Unreleased]
+
+## [5.4.2] - 2024-10-16
+### Added
+- Support custom headers. [EventStoreDB-Client-Java#289](https://github.com/EventStore/EventStoreDB-Client-Java/pull/289)
+
+### Changed
+- Extract tracing metadata from Event. [EventStoreDB-Client-Java#284](https://github.com/EventStore/EventStoreDB-Client-Java/pull/284)
 
+## [5.4.1] - 2024-07-16
+### Changed
+- Add user certificates and otel samples. [EventStoreDB-Client-Java#274](https://github.com/EventStore/EventStoreDB-Client-Java/pull/274)
+- Support different runtime environments out-of-the-box. [EventStoreDB-Client-Java#279](https://github.com/EventStore/EventStoreDB-Client-Java/pull/279)
+- Remove expectation oriented tests. [EventStoreDB-Client-Java#279](https://github.com/EventStore/EventStoreDB-Client-Java/pull/279)
+- Fixed bug in the ClientTelemetry whereby injection logic forces all events to have JSON content type. [EventStoreDB-Client-Java#281](https://github.com/EventStore/EventStoreDB-Client-Java/pull/281)
+
+### Fixed
+- Use connection string in user certificate sample. [EventStoreDB-Client-Java#276](https://github.com/EventStore/EventStoreDB-Client-Java/pull/276)
+- Fix connection service skipping discovery interval sleeps. [EventStoreDB-Client-Java#278](https://github.com/EventStore/EventStoreDB-Client-Java/pull/278)
+
+## [5.4.0] - 2024-05-23
 ### Added
 - new connection settings to provide an x.509 certificate for user authentication. [EventStoreDB-Client-Java#266](https://github.com/EventStore/EventStoreDB-Client-Java/pull/266)
 
diff --git a/db-client-java/build.gradle b/db-client-java/build.gradle
index c7ec2cfb..fc822dd7 100644
--- a/db-client-java/build.gradle
+++ b/db-client-java/build.gradle
@@ -19,7 +19,7 @@ tasks.withType(JavaCompile) {
 }
 
 group = 'com.eventstore'
-version = '5.4.1'
+version = '5.4.2'
 
 java {
     withJavadocJar()
diff --git a/db-client-java/src/main/java/com/eventstore/dbclient/ConnectionMetadata.java b/db-client-java/src/main/java/com/eventstore/dbclient/ConnectionMetadata.java
index 08b303c3..23b9d6d8 100644
--- a/db-client-java/src/main/java/com/eventstore/dbclient/ConnectionMetadata.java
+++ b/db-client-java/src/main/java/com/eventstore/dbclient/ConnectionMetadata.java
@@ -2,6 +2,8 @@
 
 import io.grpc.Metadata;
 
+import java.util.Map;
+
 class ConnectionMetadata {
     private Metadata metadata;
 
@@ -27,6 +29,13 @@ public ConnectionMetadata requiresLeader() {
         return this;
     }
 
+    public ConnectionMetadata headers(Map<String, String> headers) {
+        for (Map.Entry<String, String> entry : headers.entrySet())
+            this.metadata.put(Metadata.Key.of(entry.getKey(), Metadata.ASCII_STRING_MARSHALLER), entry.getValue());
+
+        return this;
+    }
+
     public Metadata build() {
         return this.metadata;
     }
diff --git a/db-client-java/src/main/java/com/eventstore/dbclient/GrpcUtils.java b/db-client-java/src/main/java/com/eventstore/dbclient/GrpcUtils.java
index a61d2072..08111bdb 100644
--- a/db-client-java/src/main/java/com/eventstore/dbclient/GrpcUtils.java
+++ b/db-client-java/src/main/java/com/eventstore/dbclient/GrpcUtils.java
@@ -150,6 +150,8 @@ static public <S extends AbstractAsyncStub<S>, O> S configureStub(S stub, EventS
             metadata.requiresLeader();
         }
 
+        metadata.headers(options.getHeaders());
+
         return finalStub.withInterceptors(MetadataUtils.newAttachHeadersInterceptor(metadata.build()));
     }
 }
\ No newline at end of file
diff --git a/db-client-java/src/main/java/com/eventstore/dbclient/OptionsBase.java b/db-client-java/src/main/java/com/eventstore/dbclient/OptionsBase.java
index 08c0d316..97536c4a 100644
--- a/db-client-java/src/main/java/com/eventstore/dbclient/OptionsBase.java
+++ b/db-client-java/src/main/java/com/eventstore/dbclient/OptionsBase.java
@@ -1,10 +1,14 @@
 package com.eventstore.dbclient;
 
+import java.util.HashMap;
+import java.util.Map;
+
 class OptionsBase<T> {
     private Long deadline;
     private final OperationKind kind;
     private UserCredentials credentials;
     private boolean requiresLeader;
+    private Map<String, String> headers = new HashMap<>();
 
     protected OptionsBase() {
         this(OperationKind.Regular);
@@ -83,6 +87,15 @@ public T deadline(long durationInMs) {
         return (T)this;
     }
 
+    /**
+     * Adds a custom HTTP header that will be added to the request.
+     */
+    @SuppressWarnings("unchecked")
+    public T header(String key, String value) {
+        headers.put(key, value);
+        return (T)this;
+    }
+
     Long getDeadline() {
         return deadline;
     }
@@ -98,4 +111,8 @@ boolean isLeaderRequired() {
     UserCredentials getCredentials() {
         return this.credentials;
     }
+
+    Map<String, String> getHeaders() {
+        return this.headers;
+    }
 }
\ No newline at end of file