diff --git a/debian/control b/debian/control
index ce10e7a..27775c6 100644
--- a/debian/control
+++ b/debian/control
@@ -18,6 +18,7 @@ XSBC-Original-Vcs-Git: https://git.progress-linux.org/users/daniel.baumann/debia
 
 Package: progress-linux
 Section: admin
+Protected: yes
 Architecture: all
 Multi-Arch: foreign
 Depends:
@@ -37,6 +38,7 @@ Description: Progress Linux - Setup
 
 Package: progress-linux-pgp-keys
 Section: admin
+Protected: yes
 Architecture: all
 Multi-Arch: foreign
 Depends:
@@ -54,6 +56,7 @@ Description: Progress Linux - PGP Keys
 
 Package: progress-linux-ssh-keys
 Section: admin
+Protected: yes
 Architecture: all
 Multi-Arch: foreign
 Depends: