diff --git a/README.md b/README.md
index 4805e91..187736c 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ Note that it requires an extension to the Mumble protocol which has not yet been
 
 - Rust 1.39+ (e.g. via [rustup](https://rustup.rs/))
 - libnice development headers (`libnice-devel` on Fedora, `libnice-dev` on Debian)
+- OpenSSL development headers (`openssl-devel` on Fedora, `libssl-dev` on Debian)
 - clang (`clang` on Fedora and Debian)
 
 #### Building