diff --git a/README.adoc b/README.adoc
index 72b99e5..085efe9 100644
--- a/README.adoc
+++ b/README.adoc
@@ -63,14 +63,14 @@ Notable features:
 Building
 --------
 Build dependencies: CMake, pkg-config, help2man, awk, sh, liberty (included) +
-Runtime dependencies: openssl, curses (degesch),
+Runtime dependencies: openssl, curses (degesch), lua >= 5.3 (degesch, optional)
                       readline or libedit >= 2013-07-12 (degesch)
 
  $ git clone --recursive https://github.com/pjanouch/uirc3.git
  $ mkdir uirc3/build
  $ cd uirc3/build
  $ cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug \
-            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF
+            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF -DWANT_LUA=ON
  $ make
 
 To install the application, you can do either the usual: