diff --git a/debian/control b/debian/control
index 9b0d0ddc..78e8ea1d 100644
--- a/debian/control
+++ b/debian/control
@@ -7,7 +7,7 @@ Build-Depends: debhelper
 
 Package: rscds
 Architecture: all
-Depends: debconf (>= 1.0.32), php5 | php4 (>= 4:4.3), php5-pgsql | php4-pgsql(>= 3:4.3.0), postgresql-client-8.2 | postgresql-client-8.1 | postgresql-client-8.0 | postgresql-client (>= 7.4), libawl-php (>=0.20), libclass-dbi-pg-perl, php5 | php4-domxml
+Depends: debconf (>= 1.0.32), php5 | php4 (>= 4:4.3), php5-pgsql | php4-pgsql(>= 3:4.3.0), postgresql-client-8.2 | postgresql-client-8.1 | postgresql-client-8.0 | postgresql-client (>= 7.4), libawl-php (>=0.20), libclass-dbi-pg-perl, php5 | php4-domxml, libyaml-perl
 Description: DAViCal Calendar Server
  The DAViCal Calendar Server is designed to trivially store
  CalDAV calendars, such as those from Evolution, Sunbird/Lightning,