diff --git a/Changelog.md b/Changelog.md
index 3bc91335..c27c495f 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,10 @@
 # Changelog
 
+**4.2.11-1**
+- Update to ubuntu:focal-20231211
+- Fix mysql signing key
+- Pin bundler version to 2.4.22, as newer versions are not compatible with ruby 2.7
+
 **4.2.11**
 - redmine: upgrade to v4.2.11
 - Update to ubuntu:focal-20230801
diff --git a/README.md b/README.md
index 5438569d..ec2de0a5 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ Dockerfile to build a [Redmine](http://www.redmine.org/) container image.
 
 ## Version
 
-Current Version: **sameersbn/redmine:4.2.11**
+Current Version: **sameersbn/redmine:4.2.11-1**
 
 *P.S.: If your installation depends on various third party plugins, please stick with 2.6.xx series to avoid breakage.*
 
@@ -105,7 +105,7 @@ docker pull sameersbn/redmine:latest
 Since version `2.4.2`, the image builds are being tagged. You can now pull a particular version of redmine by specifying the version number. For example,
 
 ```bash
-docker pull sameersbn/redmine:4.2.11
+docker pull sameersbn/redmine:4.2.11-1
 ```
 
 Alternately you can build the image yourself.
@@ -143,7 +143,7 @@ docker run --name=redmine -d \
   --env='REDMINE_PORT=10083' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 **NOTE**: Please allow a minute or two for the Redmine application to start.
@@ -190,7 +190,7 @@ Volumes can be mounted in docker by specifying the **'-v'** option in the docker
 docker run --name=redmine -it --rm \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 ## Database
@@ -241,7 +241,7 @@ docker run --name=redmine -it --rm \
   --env='DB_USER=redmine' --env='DB_PASS=password' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 This will initialize the redmine database and after a couple of minutes your redmine instance should be ready to use.
@@ -287,7 +287,7 @@ We are now ready to start the redmine application.
 docker run --name=redmine -it --rm --link=mysql-redmine:mysql \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 Here the image will also automatically fetch the `DB_NAME`, `DB_USER` and `DB_PASS` variables from the mysql container as they are specified in the `docker run` command for the mysql container. This is made possible using the magic of docker links and works with the following images:
@@ -318,7 +318,7 @@ docker run --name=redmine -it --rm \
   --env='DB_USER=redmine' --env='DB_PASS=password' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 This will initialize the redmine database and after a couple of minutes your redmine instance should be ready to use.
@@ -364,7 +364,7 @@ We are now ready to start the redmine application.
 docker run --name=redmine -it --rm --link=postgresql-redmine:postgresql \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 Here the image will also automatically fetch the `DB_NAME`, `DB_USER` and `DB_PASS` variables from the postgresql container as they are specified in the `docker run` command for the postgresql container. This is made possible using the magic of docker links and works with the following images:
@@ -387,7 +387,7 @@ The image can be configured to use an external memcached server. The memcached s
 ```bash
 docker run --name=redmine -it --rm \
   --env='MEMCACHE_HOST=192.168.1.100' --env='MEMCACHE_PORT=11211' \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 ### Linking to Memcached Container
@@ -406,7 +406,7 @@ Now you can link memcached to the redmine image:
 
 ```bash
 docker run --name=redmine -it --rm --link=memcached-redmine:memcached \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 ### Mail
@@ -420,7 +420,7 @@ docker run --name=redmine -it --rm \
   --env='SMTP_USER=USER@gmail.com' --env='SMTP_PASS=PASSWORD' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 If you are not using google mail, then please configure the SMTP host and port using the `SMTP_HOST` and `SMTP_PORT` configuration parameters.
@@ -503,7 +503,7 @@ docker run --name=redmine -d \
   --env='REDMINE_PORT=10445' --env='REDMINE_HTTPS=true' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 In this configuration, any requests made over the plain http protocol will automatically be redirected to use the https protocol. However, this is not optimal when using a load balancer.
@@ -522,7 +522,7 @@ docker run --name=redmine -d \
   --env='NGINX_HSTS_MAXAGE=2592000'
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 If you want to completely disable HSTS set `NGINX_HSTS_ENABLED` to `false`.
@@ -542,7 +542,7 @@ docker run --name=redmine -d --publish=10083:80 \
   --env='REDMINE_HTTPS=true' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 ### Deploy to a subdirectory (relative url root)
@@ -556,7 +556,7 @@ docker run --name=redmine -d --publish=10083:80 \
   --env='REDMINE_RELATIVE_URL_ROOT=/redmine' \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 Redmine will now be accessible at the `/redmine` path, e.g. `http://www.example.com/redmine`.
@@ -586,7 +586,7 @@ Also the container processes seem to be executed as the host's user/group `1000`
 ```bash
 docker run --name=redmine -it --rm [options] \
   --env="USERMAP_UID=500" --env="USERMAP_GID=500" \
-  sameersbn/redmine:4.2.11
+  sameersbn/redmine:4.2.11-1
 ```
 
 ### Available Configuration Parameters
@@ -739,7 +739,7 @@ cd /srv/docker/redmine/redmine/plugins
 wget http://goo.gl/iJcvCP -O - | sh
 ```
 
-*Please Note: this [plugin install script](https://gist.github.com/sameersbn/dd24dfdd13bc472d11a5) is not maintained and you would need to fix it if required (especially broken links)*
+*Please Note: this [plugin install script](https://gist.github.com/sameersbn/dd24dfdd13bc4.2.11-1a5) is not maintained and you would need to fix it if required (especially broken links)*
 
 ### Reloading plugins for development
 
@@ -758,7 +758,7 @@ To uninstall plugins you need to first tell redmine about the plugin you need to
 docker run --name=redmine -it --rm \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11 \
+  sameersbn/redmine:4.2.11-1 \
   app:rake redmine:plugins:migrate NAME=plugin_name VERSION=0
 ```
 
@@ -776,7 +776,7 @@ For example, to remove the recurring tasks plugin:
 docker run --name=redmine -it --rm \
   --volume=/srv/docker/redmine/redmine:/home/redmine/data \
   --volume=/srv/docker/redmine/redmine-logs:/var/log/redmine/ \
-  sameersbn/redmine:4.2.11 \
+  sameersbn/redmine:4.2.11-1 \
   app:rake redmine:plugins:migrate NAME=recurring_tasks VERSION=0
 rm -rf /srv/docker/redmine/redmine/plugins/recurring_tasks
 ```
@@ -856,7 +856,7 @@ Relaunch the container with the `app:backup:create` argument.
 
 ```bash
 docker run --name redmine -it --rm [OPTIONS] \
-  sameersbn/redmine:4.2.11 app:backup:create
+  sameersbn/redmine:4.2.11-1 app:backup:create
 ```
 
 The backup will be created in the `backups/` folder of the [Data Store](#data-store). You can change the location using the `REDMINE_BACKUPS_DIR` configuration parameter.
@@ -887,7 +887,7 @@ Relaunch the container with the `app:backup:restore` argument. Ensure you launch
 
 ```bash
 docker run --name redmine -it --rm [OPTIONS] \
-  sameersbn/redmine:4.2.11 app:backup:restore
+  sameersbn/redmine:4.2.11-1 app:backup:restore
 ```
 
 A list of existing backups will be displayed. Select a backup you wish to restore.
@@ -896,7 +896,7 @@ To avoid this interaction you can specify the backup filename using the `BACKUP`
 
 ```bash
 docker run --name redmine -it --rm [OPTIONS] \
-  sameersbn/redmine:4.2.11 app:backup:restore BACKUP=1417624827_redmine_backup.tar
+  sameersbn/redmine:4.2.11-1 app:backup:restore BACKUP=1417624827_redmine_backup.tar
 ```
 
 ## Automated backups
@@ -915,7 +915,7 @@ The `app:rake` command allows you to run redmine rake tasks. To run a rake task
 
 ```bash
 docker run --name=redmine -d [OPTIONS] \
-  sameersbn/redmine:4.2.11 app:rake redmine:email:test[admin]
+  sameersbn/redmine:4.2.11-1 app:rake redmine:email:test[admin]
 ```
 
 You can also use `docker exec` to run rake tasks on running redmine instance. For example,
@@ -928,7 +928,7 @@ Similarly, to remove uploaded files left unattached
 
 ```bash
 docker run --name=redmine -d [OPTIONS] \
-  sameersbn/redmine:4.2.11 app:rake redmine:attachments:prune
+  sameersbn/redmine:4.2.11-1 app:rake redmine:attachments:prune
 ```
 
 Or,
@@ -946,7 +946,7 @@ To upgrade to newer redmine releases, simply follow this 4 step upgrade procedur
 - **Step 1**: Update the docker image.
 
 ```bash
-docker pull sameersbn/redmine:4.2.11
+docker pull sameersbn/redmine:4.2.11-1
 ```
 
 - **Step 2**: Stop and remove the currently running image
@@ -968,7 +968,7 @@ Replace `x.x.x` with the version you are upgrading from. For example, if you are
 - **Step 4**: Start the image
 
 ```bash
-docker run --name=redmine -d [OPTIONS] sameersbn/redmine:4.2.11
+docker run --name=redmine -d [OPTIONS] sameersbn/redmine:4.2.11-1
 ```
 
 ## Shell Access
@@ -983,10 +983,10 @@ docker exec -it redmine bash
 
 ## Upgrading to next redmine release
 
-* Commands to run to update image to next redmine release, examples are from 4.2.11 to 4.2.11
+* Commands to run to update image to next redmine release, examples are from 4.2.11-1 to 4.2.11-1
 
 ```bash
-sed -i 's/4.2.11/4.2.11/g' VERSION README.md docker-compose-mysql.yml docker-compose-ssl.yml docker-compose-sqlite3.yml docker-compose-mariadb.yml Dockerfile docker-compose.yml
+sed -i 's/4.2.11-1/4.2.11-1/g' VERSION README.md docker-compose-mysql.yml docker-compose-ssl.yml docker-compose-sqlite3.yml docker-compose-mariadb.yml Dockerfile docker-compose.yml
 vim Changelog.md # Update change log
 sudo rm -rf /srv/docker/redmine/ # Clean old run
 docker-compose down
@@ -1000,7 +1000,7 @@ git push origin --tags
 ```
 
 * Open https://github.com/sameersbn/docker-redmine/releases and Draft new release
-* Select tag 4.2.11 and set release title to 4.2.11
+* Select tag 4.2.11-1 and set release title to 4.2.11-1
 * Publish release
 * Check https://quay.io/repository/sameersbn/redmine?tab=info  and https://hub.docker.com/r/sameersbn/redmine/builds for build progress
 
diff --git a/VERSION b/VERSION
index 7cac8507..e303bfa6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.2.11
+4.2.11-1
diff --git a/docker-compose-mariadb.yml b/docker-compose-mariadb.yml
index b43a396c..da68330c 100644
--- a/docker-compose-mariadb.yml
+++ b/docker-compose-mariadb.yml
@@ -13,7 +13,7 @@ services:
 
   redmine:
     build: ./
-    image: sameersbn/redmine:4.2.11
+    image: sameersbn/redmine:4.2.11-1
     depends_on:
     - database
     environment:
diff --git a/docker-compose-mysql.yml b/docker-compose-mysql.yml
index 6c761936..a3e9c00e 100644
--- a/docker-compose-mysql.yml
+++ b/docker-compose-mysql.yml
@@ -12,7 +12,7 @@ services:
 
   redmine:
     build: ./
-    image: sameersbn/redmine:4.2.11
+    image: sameersbn/redmine:4.2.11-1
     depends_on:
     - mysql
     environment:
diff --git a/docker-compose-sqlite3.yml b/docker-compose-sqlite3.yml
index 072ec2ac..efaea4fb 100644
--- a/docker-compose-sqlite3.yml
+++ b/docker-compose-sqlite3.yml
@@ -3,7 +3,7 @@ version: '2'
 services:
   redmine:
     build: ./
-    image: sameersbn/redmine:4.2.11
+    image: sameersbn/redmine:4.2.11-1
     environment:
     - TZ=Asia/Kolkata
 
diff --git a/docker-compose-ssl.yml b/docker-compose-ssl.yml
index c9df230d..f3e034ad 100644
--- a/docker-compose-ssl.yml
+++ b/docker-compose-ssl.yml
@@ -12,7 +12,7 @@ services:
 
   redmine:
     build: ./
-    image: sameersbn/redmine:4.2.11
+    image: sameersbn/redmine:4.2.11-1
     depends_on:
     - postgresql
     environment:
diff --git a/docker-compose.yml b/docker-compose.yml
index 997d7ddb..a60adc85 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
 
   redmine:
     build: ./
-    image: sameersbn/redmine:4.2.11
+    image: sameersbn/redmine:4.2.11-1
     depends_on:
     - postgresql
     environment: