1 files changed, 2 insertions, 1 deletions

diff --git a/README b/README
index d1be45f..c22248a 100644
--- a/README
+++ b/README
@@ -28,9 +28,10 @@ Uses
     * JSON gem (install with gem, Debian/Ubuntu packages are too old and buggy)
     * curl binary
     * sqlite3 binary and ruby libs
+    * m4 binary
 
 Debian/Ubuntu packages:
-    curl sqlite3 ruby-sqlite3 ruby-passenger libapache2-mod-passenger
+    curl m4 sqlite3 ruby-sqlite3 ruby-passenger libapache2-mod-passenger
 
 Gems:
     gem install rack rack-contrib sinatra sinatra-r18n json