From 49f2b911c315f7f37c35a0026234af1d389644bc Mon Sep 17 00:00:00 2001
From: Piotr <gawlowicz@tu-berlin.de>
Date: Thu, 7 Jul 2022 10:50:41 +0200
Subject: [PATCH] Update README.md

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 1e958ebff..de2352183 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ see https://www.nsnam.org/wiki/Installation
 ```
 2. Install ZMQ and Protocol Buffers libs:
 ```
+sudo apt-get update
 apt-get install libzmq5 libzmq5-dev
 apt-get install libprotobuf-dev
 apt-get install protobuf-compiler