diff --git a/README.md b/README.md
index 520f6c8..4091e77 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,29 @@ If you want to transfer a file to another user, you can attach it to a message.
On the settings page some convenience features can be configured, as well as the color theme.
+### System requirements
+
+To run Envoy, you have to install a Java Runtime Environment (JRE) of at least version 11.
+You can download an open source implementation from [here](https://jdk.java.net/15/).
+
+If you are running a Linux distribution, make sure that an emoji font like [Noto emoji](https://github.com/googlefonts/noto-emoji) is installed.
+Most major Linux distributions like Debian, Arch and Gentoo have a Noto emoji package available inside their package repositories.
+
## Server Administrator
To set up an Envoy server, download the package from the release page.
Because the project lacks external documentation for the moment, please refer to the Javadoc inside the source code to configure your Envoy instance.
+### System requirements
+
+To run Envoy server, you have to install a JRE as mentioned above, as well as a database.
+In development, PostgreSQL is used, which you can download from [here](https://www.postgresql.org/download/).
+
+Look at the file `META-INF/persistence.xml` inside `envoy-server.jar` for the database configuration.
+
+After creating a database and configuring the credentials, the server will initialize the necessary tables automatically.
+
## Programmer
Envoy is organized as a Maven project that is split into three modules.
diff --git a/client/pom.xml b/client/pom.xml
index 24f2755..3f1a1ea 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -21,12 +21,12 @@
org.openjfx
javafx-controls
- 11.0.2
+ 15
org.openjfx
javafx-fxml
- 11.0.2
+ 15