diff --git a/README.md b/README.md
index b359440..a4524a9 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,8 @@
-[![Build Status](https://travis-ci.org/HSLdevcom/mqtt-pulsar-gateway.svg?branch=master)](https://travis-ci.org/HSLdevcom/mqtt-pulsar-gateway)
+## mqtt-pulsar-gateway [![Test and create Docker image](https://github.com/HSLdevcom/mqtt-pulsar-gateway/actions/workflows/test-and-build.yml/badge.svg)](https://github.com/HSLdevcom/mqtt-pulsar-gateway/actions/workflows/test-and-build.yml)
 
-## Description
+Application for reading data from MQTT topic and feeding it into Pulsar topic. This application doesn't care about the message payload, it just transfers the bytes.
 
-Application for reading data from MQTT topic and feeding it into Pulsar topic. 
-This application doesn't care about the payload, it just transfers the bytes.
+This project is part of [transitdata pipeline](https://github.com/HSLdevcom/transitdata), but it can also be used in other applications.
 
 ## Building
 
@@ -11,36 +10,43 @@ This application doesn't care about the payload, it just transfers the bytes.
 
 This project depends on [transitdata-common](https://github.com/HSLdevcom/transitdata-common) project.
 
-Either use released versions from public maven repository or build your own and install to local maven repository:
-  - ```cd transitdata-common && mvn install```  
-
 ### Locally
 
-- ```mvn compile```  
-- ```mvn package```  
+- `mvn compile`
+- `mvn package`
 
 ### Docker image
 
 - Run [this script](build-image.sh) to build the Docker image
 
-
 ## Running
 
-Requirements:
-- Pulsar Cluster
-  - By default uses localhost, override host in PULSAR_HOST if needed.
-    - Tip: f.ex if running inside Docker in OSX set `PULSAR_HOST=host.docker.internal` to connect to the parent machine
-  - You can use [this script](https://github.com/HSLdevcom/transitdata/blob/master/bin/pulsar/pulsar-up.sh) to launch it as Docker container
-- Connection to an external MQTT server.
-  - Configure username and password via files
-    - Set filepath for username via env variable FILEPATH_USERNAME_SECRET, default is `/run/secrets/mqtt_broker_username`
-    - Set filepath for password via env variable FILEPATH_PASSWORD_SECRET, default is `/run/secrets/mqtt_broker_password`
-  - Mandatory: Set mqtt-topic via env variable MQTT_TOPIC
-  - Remember to use a unique MQTT client-id's if you have multiple instances connected to a single broker.
-
-All other configuration options are configured in the [config file](src/main/resources/environment.conf)
-which can also be configured externally via env variable CONFIG_PATH
-
-Launch Docker container with
+### Dependencies
 
-```docker-compose -f compose-config-file.yml up <service-name>```   
+* Pulsar
+  * You can use [this script](https://github.com/HSLdevcom/transitdata/blob/master/bin/pulsar/pulsar-up.sh) to launch it as Docker container
+* Connection to an MQTT broker
+
+### Environment variables
+
+#### MQTT
+
+* `MQTT_CREDENTIALS_REQUIRED`: whether the broker needs credentials
+* `FILEPATH_USERNAME_SECRET`: path to the file containing the username, default is `/run/secrets/mqtt_broker_username`
+* `FILEPATH_PASSWORD_SECRET`: path to the file containing the password, default is `/run/secrets/mqtt_broker_password`
+* `MQTT_BROKER_HOST`: MQTT broker URL
+* `MQTT_TOPIC`: MQTT topic to subscribe
+* `MQTT_QOS`: MQTT QoS
+* `MQTT_MAX_INFLIGHT`: maximum MQTT messages inflight
+* `MQTT_CLEAN_SESSION`: whether to open a clean MQTT session, i.e. if true, unacked messages are not redelivered
+* `MQTT_CLIENT_ID`: client ID to use when subscribing to the MQTT topic. Remember to use unique client ID if there is more than one subscription
+* `MQTT_ADD_RANDOM_TO_CLIENT_ID`: whether to append random string to the client ID
+* `MQTT_KEEP_ALIVE_INTERVAL`: interval in seconds for MQTT keep-alive 
+* `MQTT_MANUAL_ACK`: whether to ack messages to the MQTT broker only after they have been successfully sent to Pulsar. Setting this to true might cause performance problems with high message rate
+
+#### Other
+
+* `IN_FLIGHT_ALERT_THRESHOLD`: send log message if the inflight message count is higher than this
+* `MAX_MESSAGES_PER_SECOND`: maximum amount messages per second to be sent to Pulsar. If negative, no limit
+* `MSG_MONITORING_INTERVAL`: send log message after this amount of messages has been processed
+* `UNHEALTHY_MSG_SEND_INTERVAL_SECS`: consider the service unhealthy if no message has been sent to Pulsar in this period. If negative, no healthcheck for last sent message
diff --git a/pom.xml b/pom.xml
index 0995adb..23fd97a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,14 +2,14 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>fi.hsl.transitlog</groupId>
     <artifactId>mqtt-pulsar-gateway</artifactId>
-    <version>1.2.0</version>
+    <version>1.2.1</version>
     <packaging>jar</packaging>
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
-        <common.version>1.4.4</common.version>
+        <common.version>1.6.1-RC</common.version>
         <paho.version>1.2.5</paho.version>
     </properties>
 
@@ -63,7 +63,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>4.11.0</version>
+            <version>5.2.0</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -81,7 +81,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
-                <version>3.4.2</version>
+                <version>3.5.0</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
@@ -105,7 +105,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.10.1</version>
+                <version>3.11.0</version>
                 <configuration>
                     <source>11</source>
                     <target>11</target>
@@ -114,7 +114,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.2</version>
+                <version>3.0.0</version>
             </plugin>
         </plugins>