diff --git a/README.md b/README.md
index 75664cc..23c0546 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,16 @@
 # Waffle Mole
 
-A small gopher server for POSIX systems, written in C99.
+A small gopher server for POSIX systems, written in C99. Drops
+priviledges with `pledge()` and `unveil()` on OpenBSD.
 
-To build: `make`
+## Building
+
+You'll need:
+- A C99 compiler
+- POSIX-compatible make
+
+Run `make` or `make waffle-mole`.
+
+## Limitations
+
+Only IPv6 is supported currently.