diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 90ea8f5..a4b7d72 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -1,6 +1,6 @@
 = Changelog
 
-== 0.4.0 - unreleased
+== 0.4.0 - 2021-06-23
 
 :188: https://github.com/stackabletech/agent/pull/188[#188]
 :205: https://github.com/stackabletech/agent/pull/205[#205]
diff --git a/Cargo.lock b/Cargo.lock
index a270c56..1dd782a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2720,7 +2720,7 @@ checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
 name = "stackable-agent"
-version = "0.4.0-nightly"
+version = "0.4.0"
 dependencies = [
  "Inflector",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index c443d65..94a5773 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ description = "The component of the Stackable Platform that manages installation
 edition = "2018"
 license = "Apache-2.0"
 name = "stackable-agent"
-version = "0.4.0-nightly"
+version = "0.4.0"
 
 [dependencies]
 # We are currently referencing the Krustlet directly from a Stackable fork of the official repository.