diff --git a/README b/README
index 399c807cf2f500c62b5587639b40793946603bde..d78b26bfc50d25d3b4b0fcecde33100b9da1fd70 100644
--- a/README
+++ b/README
@@ -6,7 +6,7 @@ To build OSv
 
    On Fedora:
      yum install ant autoconf automake boost-static gcc-c++ genromfs \
-        libvirt libtool zfs-fuse
+        libvirt libtool zfs-fuse flex bison
 
    On Debian:
      apt-get install libboost-all-dev genromfs libvirt-fuse autoconf