diff --git a/base/univention-lib/debian/control b/base/univention-lib/debian/control
index fba9bf4..230fe82 100644
--- a/base/univention-lib/debian/control
+++ b/base/univention-lib/debian/control
@@ -21,7 +21,8 @@ Depends: ${python:Depends},
  python-ldb,
  python-samba,
  python-ldap,
- python-imaging
+ python-imaging,
+ rdate
 Provides: ${python:Provides}
 Description: UCS - common scripting functions for Python scripts
  This package contains Python functions used by various
diff --git a/base/univention-system-setup/debian/control b/base/univention-system-setup/debian/control
index 0dfb9fa..cd349cb 100644
--- a/base/univention-system-setup/debian/control
+++ b/base/univention-system-setup/debian/control
@@ -35,6 +35,7 @@ Depends: ${misc:Depends}, ${python:Depends},
  python-univention-lib (>= 4.0.5-2),
  univention-ipcalc (>= 5),
  gettext-base,
+ rdate
 Breaks: univention-system-setup-boot (<< 8.1.63-5)
 Recommends: univention-management-console-module-setup,
  rdate,