update readme

README.md

@@ -23,7 +23,7 @@ Options:
 
 ## Building from source
 
-1. Install build dependencies: `sudo apt install gcc gcc-multilib cmake ffmpeg libopus-dev`
+1. Install build dependencies: `sudo apt install gcc gcc-multilib cmake ffmpeg libopus-dev pkg-config libssl-dev`
 2. Install database server: `sudo apt install mysql-server-8.0`. Create a database called `soundfx`
 3. Install Cargo and Rust from https://rustup.rs
 4. Install SQLx CLI: `cargo install sqlx-cli`