diff --git a/debian/control b/debian/control
index 0eb5544..88c0f5e 100644
--- a/debian/control
+++ b/debian/control
@@ -13,7 +13,7 @@ Standards-Version: 3.9.8
 
 Package: security-misc
 Architecture: all
-Depends: expect, ${misc:Depends}
+Depends: expect, tcl8.6, ${misc:Depends}
 Replaces: tcp-timestamps-disable
 Description: enhances misc security settings
  The following settings are changed: