diff --git a/machines/core-services-01/configuration.nix b/machines/core-services-01/configuration.nix
index 466c48a..a09eec0 100644
--- a/machines/core-services-01/configuration.nix
+++ b/machines/core-services-01/configuration.nix
@@ -74,7 +74,6 @@
   users.users.root.openssh.authorizedKeys.keyFiles = [
     ./pubkeys/gdd.keys
     ./pubkeys/raito.keys
-    ./pubkeys/hackens-milieu.keys
   ];
 
   # Open ports in the firewall.
diff --git a/machines/core-services-01/netboot-server.nix b/machines/core-services-01/netboot-server.nix
index ac0bd87..5b291bf 100644
--- a/machines/core-services-01/netboot-server.nix
+++ b/machines/core-services-01/netboot-server.nix
@@ -15,7 +15,6 @@ let
       users.users.root.openssh.authorizedKeys.keyFiles = [
         ./pubkeys/gdd.keys
         ./pubkeys/raito.keys
-        ./pubkeys/hackens-milieu.keys
       ];
       programs.mosh.enable = true;
 
diff --git a/machines/remote-builder-01/configuration.nix b/machines/remote-builder-01/configuration.nix
index 79a6a28..1c6245b 100644
--- a/machines/remote-builder-01/configuration.nix
+++ b/machines/remote-builder-01/configuration.nix
@@ -63,7 +63,6 @@
   users.users.root.openssh.authorizedKeys.keyFiles = [
     ./pubkeys/gdd.keys
     ./pubkeys/raito.keys
-    ./pubkeys/hackens-milieu.keys
     ./pubkeys/remote-builders.keys
   ];