diff --git a/nixos/homes/palo/gpg.nix b/nixos/homes/palo/gpg.nix
index 75da757..e9e9b02 100644
--- a/nixos/homes/palo/gpg.nix
+++ b/nixos/homes/palo/gpg.nix
@@ -24,5 +24,8 @@
     enableSshSupport = true;
     enableZshIntegration = true;
     # sshKeys = [];
+    defaultCacheTtl = 30;
+    defaultCacheTtlSsh = 30;
+
   };
 }
diff --git a/nixos/homes/palo/packages/development.nix b/nixos/homes/palo/packages/development.nix
index fb581fa..fae2308 100644
--- a/nixos/homes/palo/packages/development.nix
+++ b/nixos/homes/palo/packages/development.nix
@@ -158,6 +158,8 @@ with lib;
           nixpkgs-fmt
           treefmt
 
+          mermaid-cli
+
         ] ++ (map pandocScript (lib.cartesianProductOfSets {
           inputFormat = [ "man" "markdown" "mediawiki" "asciidoc" ];
           outputFormat = [ "mediawiki" "docbook5" "html5" "man" "jira" "markdown" ];
diff --git a/nixos/machines/sternchen/configuration.nix b/nixos/machines/sternchen/configuration.nix
index 1bea30b..7ee9625 100644
--- a/nixos/machines/sternchen/configuration.nix
+++ b/nixos/machines/sternchen/configuration.nix
@@ -10,6 +10,8 @@
     ./syncthing.nix
     ./tinc.nix
 
+    ./cups.nix
+
   ];
 
   sops.defaultSopsFile = ../../secrets/sternchen.yaml;
diff --git a/nixos/machines/sternchen/cups.nix b/nixos/machines/sternchen/cups.nix
new file mode 100644
index 0000000..2c2e41d
--- /dev/null
+++ b/nixos/machines/sternchen/cups.nix
@@ -0,0 +1,16 @@
+{
+  hardware.printers.ensurePrinters = [
+    {
+      description = "Lexmark E350d";
+      deviceUri = "usb://Lexmark/E350d?serial=622Z9ZC";
+      location = "office";
+      name = "Lexmark_E350d";
+      model = "drv:///sample.drv/generic.ppd";
+      ppdOptions = {
+        job-sheets = "none, none";
+        media = "na_letter_8.5x11in";
+        sides = "one-sided";
+      };
+    }
+  ];
+}