diff --git a/Setting-up-a-new-x86_64-Linux-CI-server.md b/Setting-up-a-new-x86_64-Linux-CI-server.md
index bf8b5a6..7e95710 100644
--- a/Setting-up-a-new-x86_64-Linux-CI-server.md
+++ b/Setting-up-a-new-x86_64-Linux-CI-server.md
@@ -20,7 +20,7 @@ ssh root@zanic.ziglang.org
 
 apt update
 apt upgrade
-apt install cmake ninja-build tidy git
+apt install cmake ninja-build tidy git build-essential
 
 adduser ci
 passwd -d ci