diff --git a/modules/rhizo_base/manifests/apt.pp b/modules/rhizo_base/manifests/apt.pp
index 3429bf8..59b5211 100644
--- a/modules/rhizo_base/manifests/apt.pp
+++ b/modules/rhizo_base/manifests/apt.pp
@@ -91,6 +91,10 @@ class rhizo_base::apt::buster inherits rhizo_base::apt::common {
       location    => "http://download.opensuse.org/repositories/network:/osmocom:/${osmo_repo}/Debian_10/",
       release     => './',
       repos       => '',
+      key         => {
+        'id'      => '0080689BE757A876CB7DC26962EB1A0917280DDF',
+        'source'  => 'http://download.opensuse.org/repositories/network:/osmocom:/${osmo_repo}/Debian_10/Release.key'
+       },
       notify      => Exec['apt_update'],
     }
 
@@ -138,15 +142,9 @@ class rhizo_base::apt::stretch inherits rhizo_base::apt::common {
        }
     }
 
-  apt::source { 'osmocom':
-      location    => "http://download.opensuse.org/repositories/network:/osmocom:/${osmo_repo}/Debian_9.0/",
-      release     => './',
-      repos       => '',
-      notify      => Exec['apt_update'],
-    }
-
    file { [ '/etc/apt/sources.list.d/osmocom-latest.list',
-            '/etc/apt/sources.list.d/osmocom-nightly.list' ]:
+            '/etc/apt/sources.list.d/osmocom-nightly.list',
+            '/etc/apt/sources.list.d/osmocom.list' ]:
       ensure     => absent,
     }
 }