diff --git a/bitnami/drupal/8/debian-9/Dockerfile b/bitnami/drupal/8/debian-9/Dockerfile
index d20bf5506c9e..a98dd2f7a028 100644
--- a/bitnami/drupal/8/debian-9/Dockerfile
+++ b/bitnami/drupal/8/debian-9/Dockerfile
@@ -1,4 +1,4 @@
-FROM bitnami/minideb-extras:stretch-r237
+FROM bitnami/minideb-extras:stretch-r238
 LABEL maintainer "Bitnami <containers@bitnami.com>"
 
 # Install required system packages and dependencies
@@ -17,7 +17,7 @@ ENV ALLOW_EMPTY_PASSWORD="no" \
     APACHE_HTTPS_PORT_NUMBER="443" \
     APACHE_HTTP_PORT_NUMBER="80" \
     BITNAMI_APP_NAME="drupal" \
-    BITNAMI_IMAGE_VERSION="8.6.4-debian-9-r20" \
+    BITNAMI_IMAGE_VERSION="8.6.4-debian-9-r21" \
     DRUPAL_DATABASE_NAME="bitnami_drupal" \
     DRUPAL_DATABASE_PASSWORD="" \
     DRUPAL_DATABASE_USER="bn_drupal" \
diff --git a/bitnami/drupal/README.md b/bitnami/drupal/README.md
index fad53928a7be..b3d8ea7107ac 100644
--- a/bitnami/drupal/README.md
+++ b/bitnami/drupal/README.md
@@ -39,10 +39,10 @@ Bitnami containers can be used with [Kubeapps](https://kubeapps.com/) for deploy
 Learn more about the Bitnami tagging policy and the difference between rolling tags and immutable tags [in our documentation page](https://docs.bitnami.com/containers/how-to/understand-rolling-tags-containers/).
 
 
-* [`8-rhel-7`, `8.6.4-rhel-7-r32` (8/rhel-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-rhel-7-r32/8/rhel-7/Dockerfile)
+* [`8-rhel-7`, `8.6.4-rhel-7-r33` (8/rhel-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-rhel-7-r33/8/rhel-7/Dockerfile)
 * [`8-php5-rhel-7`, `8.6.4-php5-rhel-7-r35` (8-php5/rhel-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-php5-rhel-7-r35/8-php5/rhel-7/Dockerfile)
 * [`8-ol-7`, `8.6.4-ol-7-r33` (8/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-ol-7-r33/8/ol-7/Dockerfile)
-* [`8-debian-9`, `8.6.4-debian-9-r20`, `8`, `8.6.4`, `8.6.4-r20`, `latest` (8/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-debian-9-r20/8/debian-9/Dockerfile)
+* [`8-debian-9`, `8.6.4-debian-9-r21`, `8`, `8.6.4`, `8.6.4-r21`, `latest` (8/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-drupal/blob/8.6.4-debian-9-r21/8/debian-9/Dockerfile)
 
 Subscribe to project updates by watching the [bitnami/drupal GitHub repo](https://github.com/bitnami/bitnami-docker-drupal).