diff --git a/flake.lock b/flake.lock
index 217eb7f..a301d01 100644
--- a/flake.lock
+++ b/flake.lock
@@ -406,16 +406,16 @@
     "mattermost-server": {
       "flake": false,
       "locked": {
-        "lastModified": 1680710455,
-        "narHash": "sha256-+OIIhoDn8Km4/xoVAUpCBkmu2hJRLpwluYnsPeTH8Qc=",
+        "lastModified": 1683810279,
+        "narHash": "sha256-qC6tJcWruiTbWXKuACuhl0kwbRdPVXfUlaFJx4DiQgE=",
         "owner": "mattermost",
         "repo": "mattermost-server",
-        "rev": "8cf21b2ca06ebc4f26bf6ddd892650f370dd2bd3",
+        "rev": "bcd5477a3f6eebc222b1378059e842b6d33e9eb2",
         "type": "github"
       },
       "original": {
         "owner": "mattermost",
-        "ref": "v7.1.8",
+        "ref": "v7.8.5",
         "repo": "mattermost-server",
         "type": "github"
       }
@@ -423,13 +423,13 @@
     "mattermost-webapp": {
       "flake": false,
       "locked": {
-        "narHash": "sha256-Pj7rAxuDulD24kCweydNsVg/vEAQvJPSEWRtX8cxbkg=",
+        "narHash": "sha256-IkOVU6/wYYqHcpAC23Yz4e2LCSPYvb7LHya6MUCn/+w=",
         "type": "tarball",
-        "url": "https://releases.mattermost.com/7.1.8/mattermost-7.1.8-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/7.8.5/mattermost-7.8.5-linux-amd64.tar.gz"
       },
       "original": {
         "type": "tarball",
-        "url": "https://releases.mattermost.com/7.1.8/mattermost-7.1.8-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/7.8.5/mattermost-7.8.5-linux-amd64.tar.gz"
       }
     },
     "nix-doom-emacs": {
diff --git a/flake.nix b/flake.nix
index d910ee2..547c017 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,9 +2,9 @@
   description = "hacc infra stuff";
 
   inputs = {
-    mattermost-webapp.url = "https://releases.mattermost.com/7.1.8/mattermost-7.1.8-linux-amd64.tar.gz";
+    mattermost-webapp.url = "https://releases.mattermost.com/7.8.5/mattermost-7.8.5-linux-amd64.tar.gz";
     mattermost-webapp.flake = false;
-    mattermost-server.url = "github:mattermost/mattermost-server?ref=v7.1.8";
+    mattermost-server.url = "github:mattermost/mattermost-server?ref=v7.8.5";
     mattermost-server.flake = false;
 
     nixpkgs.url = "nixpkgs/nixos-22.11";
diff --git a/pkgs/mattermost/default.nix b/pkgs/mattermost/default.nix
index cdc5ba7..0e4a03f 100644
--- a/pkgs/mattermost/default.nix
+++ b/pkgs/mattermost/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, fetchFromGitHub, buildGo118Module, buildEnv, lib, sources }:
 
 let
-  version = "7.1.8";
+  version = "7.8.5";
 
   mattermost-server = buildGo118Module rec {
     pname = "mattermost-server";
@@ -9,7 +9,7 @@ let
 
     src = sources.mattermost-server.outPath;
 
-    vendorSha256 = "sha256-98riYN6MaBsKyaueogjXI7x3Lcionk0xcGt4DH684QU=";
+    vendorSha256 = "sha256-VvGLYOESyoBpFmIibHWxazliHcscMxf3KcQ46NQ4syk=";
 
     subPackages = [ "cmd/mattermost" ];
 
diff --git a/services/mattermost.nix b/services/mattermost.nix
index b02e613..e4493d9 100644
--- a/services/mattermost.nix
+++ b/services/mattermost.nix
@@ -128,6 +128,12 @@ in {
             ShowEmailAddress = false;
             ShowFullName = true;
           };
+          # to disable the extra landing page advertising the app
+          NativeAppSettings = {
+            AppDownloadLink = "";
+            AndroidAppDownloadLink = "";
+            IosAppDownloadLink = "";
+          };
           SupportSettings = {
             TermsOfServiceLink = "https://infra4future.de/nutzungsbedingungen.html";
             PrivacyPolicyLink = "https://infra4future.de/nutzungsbedingungen.html";