diff --git a/flake.lock b/flake.lock
index c11ef1e..9057177 100644
--- a/flake.lock
+++ b/flake.lock
@@ -399,16 +399,16 @@
     "mattermost-server": {
       "flake": false,
       "locked": {
-        "lastModified": 1698236542,
-        "narHash": "sha256-mubKY1nzTmysg015368z/ORqIIOAGPUEthhXNrW1sPk=",
+        "lastModified": 1699283750,
+        "narHash": "sha256-gusJh1gODqEln/rcRRax1G7usCxA0bE2KTunKPUv7mM=",
         "owner": "mattermost",
         "repo": "mattermost-server",
-        "rev": "bc159bc1b4d6a5108d6e9952f5d31712bb58c16b",
+        "rev": "f8f79e13ef11d5bd2527d21a1967bd37f46a0fae",
         "type": "github"
       },
       "original": {
         "owner": "mattermost",
-        "ref": "v8.1.4",
+        "ref": "v8.1.5",
         "repo": "mattermost-server",
         "type": "github"
       }
@@ -416,14 +416,36 @@
     "mattermost-webapp": {
       "flake": false,
       "locked": {
-        "lastModified": 1698237703,
-        "narHash": "sha256-UI2nCRT7Jv3+r2iU8ncZXDunYISGTHcgVwz9nDzDdt0=",
+        "lastModified": 1699284661,
+        "narHash": "sha256-SCJ+2+69p19o+FnV7mKAF9Qd7OFFGKgdq7x0j5eCyuQ=",
         "type": "tarball",
-        "url": "https://releases.mattermost.com/8.1.4/mattermost-8.1.4-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/8.1.5/mattermost-8.1.5-linux-amd64.tar.gz"
       },
       "original": {
         "type": "tarball",
-        "url": "https://releases.mattermost.com/8.1.4/mattermost-8.1.4-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/8.1.5/mattermost-8.1.5-linux-amd64.tar.gz"
+      }
+    },
+    "nix-darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nix-hexchen",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1698429334,
+        "narHash": "sha256-Gq3+QabboczSu7RMpcy79RSLMSqnySO3wsnHQk4DfbE=",
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "rev": "afe83cbc2e673b1f08d32dd0f70df599678ff1e7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LnL7",
+        "ref": "master",
+        "repo": "nix-darwin",
+        "type": "github"
       }
     },
     "nix-doom-emacs": {
@@ -502,6 +524,7 @@
           "utils"
         ],
         "home-manager": "home-manager",
+        "nix-darwin": "nix-darwin",
         "nix-doom-emacs": "nix-doom-emacs",
         "nixos-hardware": "nixos-hardware",
         "nixos-mailserver": [
@@ -515,11 +538,11 @@
         "waybar-iceportal": "waybar-iceportal"
       },
       "locked": {
-        "lastModified": 1699116875,
-        "narHash": "sha256-+UPx3BbTAIgKWtjG0lXfc8sqZJ32GzhZPxQ0dW2bpPg=",
+        "lastModified": 1699363198,
+        "narHash": "sha256-giPMxAg6HBs+QpEKhVsCTAOTadSZosX47cV9h8+65LE=",
         "owner": "hexchen",
         "repo": "nixfiles",
-        "rev": "b94c8416863c8d054fcd6e1fb39b726ada17404f",
+        "rev": "312e0733bc58ec876954da57d4f29ced4d85cfd6",
         "type": "gitlab"
       },
       "original": {
@@ -655,11 +678,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1698942558,
-        "narHash": "sha256-/UmnB+mEd6Eg3mJBrAgqRcyZX//RSjHphcCO7Ig9Bpk=",
+        "lastModified": 1699291058,
+        "narHash": "sha256-5ggduoaAMPHUy4riL+OrlAZE14Kh7JWX4oLEs22ZqfU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "621f51253edffa1d6f08d5fce4f08614c852d17e",
+        "rev": "41de143fda10e33be0f47eab2bfe08a50f234267",
         "type": "github"
       },
       "original": {
@@ -670,11 +693,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1698336494,
-        "narHash": "sha256-sO72WDBKyijYD1GcKPlGsycKbMBiTJMBCnmOxLAs880=",
+        "lastModified": 1699094435,
+        "narHash": "sha256-YLZ5/KKZ1PyLrm2MO8UxRe4H3M0/oaYqNhSlq6FDeeA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "808c0d8c53c7ae50f82aca8e7df263225cf235bf",
+        "rev": "9d5d25bbfe8c0297ebe85324addcb5020ed1a454",
         "type": "github"
       },
       "original": {
@@ -881,11 +904,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1699021419,
-        "narHash": "sha256-oy2j2OHXYcckifASMeZzpmbDLSvobMGt0V/RvoDotF4=",
+        "lastModified": 1699311858,
+        "narHash": "sha256-W/sQrghPAn5J9d+9kMnHqi4NPVWVpy0V/qzQeZfS/dM=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "275b28593ef3a1b9d05b6eeda3ddce2f45f5c06f",
+        "rev": "664187539871f63857bda2d498f452792457b998",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index f8732af..5e5a149 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,9 +2,9 @@
   description = "hacc infra stuff";
 
   inputs = {
-    mattermost-webapp.url = "https://releases.mattermost.com/8.1.4/mattermost-8.1.4-linux-amd64.tar.gz";
+    mattermost-webapp.url = "https://releases.mattermost.com/8.1.5/mattermost-8.1.5-linux-amd64.tar.gz";
     mattermost-webapp.flake = false;
-    mattermost-server.url = "github:mattermost/mattermost-server?ref=v8.1.4";
+    mattermost-server.url = "github:mattermost/mattermost-server?ref=v8.1.5";
     mattermost-server.flake = false;
 
     nixpkgs.url = "nixpkgs/nixos-23.05";
diff --git a/pkgs/mattermost/default.nix b/pkgs/mattermost/default.nix
index 05effff..51e2cb5 100644
--- a/pkgs/mattermost/default.nix
+++ b/pkgs/mattermost/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, fetchFromGitHub, buildGoModule, buildEnv, lib, sources }:
 
 let
-  version = "8.1.4";
+  version = "8.1.5";
 
   mattermost-server = buildGoModule rec {
     pname = "mattermost-server";
@@ -9,7 +9,7 @@ let
 
     src = "${sources.mattermost-server}/server";
 
-    vendorSha256 = "sha256-UFZlBZJf/AtJiY+EtekSrnwUmrYnH151XnRyRQFTft0=";
+    vendorSha256 = "sha256-bXZPs17F16W+TZ6JWFWt2KZpXHjFcIbgYhk2heWoYXA=";
 
     subPackages = [ "cmd/mattermost" ];