diff --git a/how-to-benchmark-cpu-memory-disk-and-network-performance-of-server-using-speedtest-and-sysbench/README.md b/how-to-benchmark-cpu-memory-disk-and-network-performance-of-server-using-speedtest-and-sysbench/README.md
index 7c90494..55af1c5 100644
--- a/how-to-benchmark-cpu-memory-disk-and-network-performance-of-server-using-speedtest-and-sysbench/README.md
+++ b/how-to-benchmark-cpu-memory-disk-and-network-performance-of-server-using-speedtest-and-sysbench/README.md
@@ -41,6 +41,7 @@ $ gpg --version
 ### Step 4: install GnuPG (only run command if previous step returned `-bash: gpg: command not found`)
 
 ```shell
+apt update
 apt install -y gnupg2
 ```