diff --git a/hosts/yodaNas/configuration.nix b/hosts/yodaNas/configuration.nix
index fa1c8a3..4025e09 100644
--- a/hosts/yodaNas/configuration.nix
+++ b/hosts/yodaNas/configuration.nix
@@ -38,6 +38,7 @@
       #../../modules/digikam-rawtherapee.nix
       #../../modules/ghostwriter.nix
       #../../modules/android.nix
+      #../../modules/pmbootstrap.nix
       #../../modules/podman.nix
       ../../modules/docker.nix
       #../../modules/docker-pushrm.nix
diff --git a/hosts/yodaTab/configuration.nix b/hosts/yodaTab/configuration.nix
index be75e1e..c1b1517 100644
--- a/hosts/yodaTab/configuration.nix
+++ b/hosts/yodaTab/configuration.nix
@@ -37,6 +37,7 @@
       #../../modules/digikam-rawtherapee.nix
       ../../modules/ghostwriter.nix
       #../../modules/android.nix
+      #../../modules/pmbootstrap.nix
       #../../modules/podman.nix
       #../../modules/docker.nix
       #../../modules/docker-pushrm.nix
diff --git a/hosts/yodaTux/configuration.nix b/hosts/yodaTux/configuration.nix
index 01b80d6..f678454 100644
--- a/hosts/yodaTux/configuration.nix
+++ b/hosts/yodaTux/configuration.nix
@@ -37,6 +37,7 @@
       ../../modules/digikam-rawtherapee.nix
       ../../modules/ghostwriter.nix
       ../../modules/android.nix
+      ../../modules/pmbootstrap.nix
       #../../modules/podman.nix
       ../../modules/docker.nix
       ../../modules/docker-pushrm.nix
diff --git a/hosts/yodaYoga/configuration.nix b/hosts/yodaYoga/configuration.nix
index 0204263..23ee4af 100644
--- a/hosts/yodaYoga/configuration.nix
+++ b/hosts/yodaYoga/configuration.nix
@@ -38,6 +38,7 @@
       #../../modules/digikam-rawtherapee.nix
       #../../modules/ghostwriter.nix
       #../../modules/android.nix
+      #../../modules/pmbootstrap.nix
       #../../modules/podman.nix
       ../../modules/docker.nix
       #../../modules/docker-pushrm.nix
diff --git a/modules/pmbootstrap.nix b/modules/pmbootstrap.nix
index 91c683a..c634012 100644
--- a/modules/pmbootstrap.nix
+++ b/modules/pmbootstrap.nix
@@ -2,12 +2,15 @@
 {
   users.users.yoda = {
     packages = with pkgs; [
-      pmbootstrap
+      # As I got the error below, I switched to the unstable version:
+      #   You are using pmbootstrap version 1.50.1, but version 1.53.0 is required.
+      #   Please update your pmbootstrap version (with your distribution's package manager).
+      unstable.pmbootstrap
     ];
   };
 
   # For netboot, port 9999 has to be opened.
-  networking.firewall.allowedTCPPorts = [ 9999 ];
+  #networking.firewall.allowedTCPPorts = [ 9999 ];
   # Sadly, the tool does not detect the phone. Not sure why. I double checked that port 9999 is open:
   # sudo iptables -nL
   # #=> Chain nixos-fw (1 references)