diff --git a/README.md b/README.md
index 279428f..8e67e71 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # Drawing App Client
+
 ---
 
 ## Prerequisite
@@ -7,6 +8,8 @@
 - [Docker](https://www.docker.com/get-started)
 - [make](https://www.gnu.org/software/make/)
 
+- [drawing-app-server](https://github.com/dennzimm/drawing-app-server)
+
 ## Preparations
 
 - **run** `make setup`
@@ -17,7 +20,6 @@
 - **copy** `example.env` to `.env` (**project root**)
 - **fill** the `.env` (project root) with your configuration or leave it as it is (_default configurations_)
 
-
 ## How to run this project (in production mode)
 
 - **run** `make start` **or** `docker-compose -f docker-compose.prod.yml up -d --build`