diff --git a/setup/zpush.sh b/setup/zpush.sh
index e46d72f13..58d6ce566 100755
--- a/setup/zpush.sh
+++ b/setup/zpush.sh
@@ -17,7 +17,7 @@ source /etc/mailinabox.conf # load global vars
 
 echo "Installing Z-Push (Exchange/ActiveSync server)..."
 apt_install \
-       php"${PHP_VER}"-soap php"${PHP_VER}"-imap libawl-php php"$PHP_VER"-xml
+       php"${PHP_VER}"-soap php"${PHP_VER}"-imap libawl-php php"$PHP_VER"-xml php"${PHP_VER}"-intl
 
 phpenmod -v "$PHP_VER" imap