diff --git a/CHANGELOG.md b/CHANGELOG.md
index d8bdd2f3364ce451606f574713423ac055e27d3d..5c24da9fdf4ec2035ba55ee716126cd8d20236fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [0.6.21] - 2022-04-14
+
+- Feat: "Add required and optional PHP modules to WP setup"
+
 ## [0.6.15] - 2022-03-29
 
 - Fix wrong redirect to port 8080
diff --git a/Chart.yaml b/Chart.yaml
index fdfcb9178c8072ffcdcd43a3f0ae4758216b9f86..83a1bf407bbbd9ab31e663773eb1f7e4e953f62d 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -1,11 +1,11 @@
 ---
 apiVersion: v2
-appVersion: "5.9.1"
+appVersion: "5.9.3"
 description: WordPress with a replicated MariaDB backend
 name: wordpress
 # Please only change the chart version as part of the release procedure: see
 # RELEASING.md
-version: 0.6.20
+version: 0.6.21
 icon: https://make.wordpress.org/design/files/2016/09/WordPress-logotype-wmark.png
 dependencies:
   - name: mariadb
diff --git a/values.yaml b/values.yaml
index f173ad32ee86ed1daf4ed8b0f1bac0a7c5182c95..556a58da5ebd7f89828c570bfbb949296171ed80 100644
--- a/values.yaml
+++ b/values.yaml
@@ -237,13 +237,13 @@ ansibleVars:
 
 image:
   repository: open.greenhost.net:4567/stackspin/wordpress-helm/wordpress
-  tag: 0.6.15
+  tag: 0.6.21
   pullPolicy: Always
   pullSecrets: []
 
 initImage:
   repository: open.greenhost.net:4567/stackspin/wordpress-helm/wordpress-cli-ansible
-  tag: 0.6.15
+  tag: 0.6.21
   pullPolicy: Always
 
 ingress:
diff --git a/wp-docker/install-php-extensions.sh b/wp-docker/install-php-extensions.sh
index 82f7384c18a4855189bc477716d12ae567e11ab6..2ae28e0da599f0d8307e44ad8b039b86b11c911d 100644
--- a/wp-docker/install-php-extensions.sh
+++ b/wp-docker/install-php-extensions.sh
@@ -22,6 +22,7 @@ docker-php-ext-install -j "$(nproc)" \
 	bcmath \
 	exif \
 	gd \
+	intl \
 	mysqli \
 	zip \
 ;