diff --git a/docs/config.toml b/docs/config.toml
index 89b40c9a..0ebe1a68 100644
--- a/docs/config.toml
+++ b/docs/config.toml
@@ -15,7 +15,7 @@ defaultContentLanguageInSubdir= false
 enableMissingTranslationPlaceholders = false
 
 [params]
-clientVersion = "0.3.0"
+clientVersion = "0.4.0"
 
 # crunchy-hugo-theme params
 editURL = "https://github.com/CrunchyData/postgres-operator/edit/master/docs/content/"
diff --git a/docs/content/reference/pgo_version.md b/docs/content/reference/pgo_version.md
index 36ab3414..1b3f6a16 100644
--- a/docs/content/reference/pgo_version.md
+++ b/docs/content/reference/pgo_version.md
@@ -31,7 +31,7 @@ pgo version
 ```
 ### Example output
 ```
-Client Version: v0.3.0
+Client Version: v0.4.0
 Operator Version: v5.5.0
 ```
 
diff --git a/docs/content/releases/0.4.0.md b/docs/content/releases/0.4.0.md
new file mode 100644
index 00000000..971a15a9
--- /dev/null
+++ b/docs/content/releases/0.4.0.md
@@ -0,0 +1,32 @@
+---
+title: "0.4.0"
+draft: false
+weight: 996
+---
+
+[Crunchy Postgres for Kubernetes]: https://www.crunchydata.com/products/crunchy-postgresql-for-kubernetes
+[`pgo` CLI documentation]: https://access.crunchydata.com/documentation/postgres-operator-client/latest
+
+Crunchy Data announces the release of `pgo`, Postgres Operator Client from Crunchy Data 0.4.0.
+
+Built as a `kubectl` plugin, the `pgo` CLI facilitates the creation and management of PostgreSQL clusters created using [Crunchy Postgres for Kubernetes][].
+
+For more information about using the CLI and the various commands available, please see the [`pgo` CLI documentation][].
+
+Additionally, please see the [CPK documentation](https://access.crunchydata.com/documentation/postgres-operator/latest) for information about [getting started](https://access.crunchydata.com/documentation/postgres-operator/latest/quickstart/) with Crunchy Postgres for Kubernetes.
+
+## Features
+- The new `start` and `stop` commands now allow the user to shutdown and restart a PostgresCluster.
+- The new `show ha` subcommand gets information (e.g., replication lag and more) from the High Availability system about a PostgresCluster's members.
+- The new `show user` subcommand gets information on users created through the PostgresCluster spec and can be used to get connection info.
+- The `show` command now can be used to show the combined outputs of the `show backup` and `show ha` subcommands.
+- The `create postgrescluster` command can now be used to create a PostgresCluster with any version of Postgres supported by Crunchy Postgres for Kubernetes.
+
+## Changes
+
+- The Support Export command now stores logs in a single directory.
+- The Support Export command now records kubectl plugins installed on the client workstation.
+- The Support Export command now records the result of `pgbackrest info` to help debug issues related to backups.
+- The Support Export command now records a list naming all reachable PostgresClusters and their namespaces.
+- The Support Export command now records the system time reported from each labeled container as compared to the system time of the client workstation to debug time drift.
+- The Backup and Restore commands now include a `--force-conflicts` flag, making it possible to overwrite backup and restore settings when there’s an ownership conflict.
diff --git a/internal/cmd/client_version.go b/internal/cmd/client_version.go
index 77ce3afa..d884d6f1 100644
--- a/internal/cmd/client_version.go
+++ b/internal/cmd/client_version.go
@@ -15,4 +15,4 @@
 package cmd
 
 // store the current PGO CLI version
-const clientVersion = "v0.3.0"
+const clientVersion = "v0.4.0"