diff --git a/hosts/fw/modules/ai-mailer.nix b/hosts/fw/modules/ai-mailer.nix
index 4d38431..7c04880 100644
--- a/hosts/fw/modules/ai-mailer.nix
+++ b/hosts/fw/modules/ai-mailer.nix
@@ -27,9 +27,10 @@
 
       ai:
         openrouter_api_key: "file://${config.sops.secrets.ai-mailer-openrouter-key.path}"
-        model: "openai/gpt-5-mini"
+        model: "openai/gpt-5.4-mini"
         temperature: 0.3
         max_tokens: 200000
+        default_language: German
 
       context:
         urls:
diff --git a/utils/pkgs/ai-mailer.nix b/utils/pkgs/ai-mailer.nix
index 4ab8f96..fd7a1ae 100644
--- a/utils/pkgs/ai-mailer.nix
+++ b/utils/pkgs/ai-mailer.nix
@@ -6,8 +6,8 @@ buildGoModule rec {
 
   src = fetchgit {
     url = "https://git.cloonar.com/Paraclub/ai-mailer.git";
-    rev = "e88ac7caff72ffee206dc931f9e16b460d205f7e";
-    sha256 = "sha256-eafDeXvslj3P3TOcng1zObP/Vyva7GY/eSstmKynnBI=";
+    rev = "1d03d584c2da3ce7ce5761f03fa0a7daadc23471";
+    sha256 = "sha256-kXW15cX9WTQQejAC+Rs3KQwpRHCQA34oT07RX9Vibp0=";
   };
 
   vendorHash = "sha256-cEnb629V1dylMQfmB/8qv9gl1+T72rlkEd4wcsterXE=";