diff --git a/CHANGELOG b/CHANGELOG
index cd4329e..9fafb30 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,14 @@
+Version 0.4.0 (2023-05-26)
+--------------------------
+Use fs2Pubsub 0.22 (close #50)
+Make event frequencies configurable (#40)
+Populate event_name fields from unstructured event (#24)
+Add randomised Seed option (#34)
+Add Kinesis sink (#21)
+Count generated entities (#33)
+Add pubsub sink (#41)
+Add AWS region configuration (#45)
+
 Version 0.3.1 (2022-11-08)
 --------------------------
 Ensure HEAD requests don't have a body (#29)
diff --git a/README.md b/README.md
index c184952..1004cb4 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,11 @@ We provide [a command line tool](#quickstart-cli) to output events to a file, an
 
 ## Quickstart CLI
 
-Download the [executable from github](https://github.com/snowplow-incubator/snowplow-event-generator/releases/download/0.3.1/snowplow-event-generator-0.3.1.tar.gz). You need java installed to run it.
+Download the [executable from github](https://github.com/snowplow-incubator/snowplow-event-generator/releases/download/0.4.0/snowplow-event-generator-0.4.0.tar.gz). You need java installed to run it.
 
 ```bash
-wget https://github.com/snowplow-incubator/snowplow-event-generator/releases/download/0.3.1/snowplow-event-generator-0.3.1.tar.gz
-tar -xzf snowplow-event-generator-0.3.1.tar.gz
+wget https://github.com/snowplow-incubator/snowplow-event-generator/releases/download/0.4.0/snowplow-event-generator-0.4.0.tar.gz
+tar -xzf snowplow-event-generator-0.4.0.tar.gz
 ```
 
 And start generating events in your `my-events` directory:
@@ -150,7 +150,7 @@ All fields in the configuration file are optional:
 Core is a scala library for generating snowplow events.
 
 ```
-libraryDependencies += "com.snowplowanalytics" % "snowplow-event-generator-core" % "0.3.1" % Test
+libraryDependencies += "com.snowplowanalytics" % "snowplow-event-generator-core" % "0.4.0" % Test
 ```
 
 ```scala
diff --git a/project/build.properties b/project/build.properties
index 10fd9ee..46e43a9 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.5.5
+sbt.version=1.8.2