diff --git a/flake.lock b/flake.lock
index 87c848b..3018e55 100644
--- a/flake.lock
+++ b/flake.lock
@@ -57,16 +57,16 @@
     "mattermost-server": {
       "flake": false,
       "locked": {
-        "lastModified": 1707498729,
-        "narHash": "sha256-w+VF8VoS7oIcDlYS5kCFzSX4rgD9l1B99XBHeJDB6JI=",
+        "lastModified": 1709319070,
+        "narHash": "sha256-NYP0mhON+TCvNTSx4I4hddFGF9TWtnMAwyJvX8sEdWU=",
         "owner": "mattermost",
         "repo": "mattermost",
-        "rev": "e9f10761eef2f9ed83fcf0be8205424bcc8df9f3",
+        "rev": "9a5b3d30495cb878328cf459850e334b592b3ab8",
         "type": "github"
       },
       "original": {
         "owner": "mattermost",
-        "ref": "v9.5.1",
+        "ref": "v9.5.2",
         "repo": "mattermost",
         "type": "github"
       }
@@ -74,14 +74,14 @@
     "mattermost-webapp": {
       "flake": false,
       "locked": {
-        "lastModified": 1707772650,
-        "narHash": "sha256-zOHWY0T1eM0PKBcNhAtMK3sNCYkSnmH7+o4aVu34dKg=",
+        "lastModified": 1709319782,
+        "narHash": "sha256-F7WzEe+3pEK8FyB3T58cJo8uB2zFZg6tZsmrUE1ZqzA=",
         "type": "tarball",
-        "url": "https://releases.mattermost.com/9.5.1/mattermost-9.5.1-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/9.5.2/mattermost-9.5.2-linux-amd64.tar.gz"
       },
       "original": {
         "type": "tarball",
-        "url": "https://releases.mattermost.com/9.5.1/mattermost-9.5.1-linux-amd64.tar.gz"
+        "url": "https://releases.mattermost.com/9.5.2/mattermost-9.5.2-linux-amd64.tar.gz"
       }
     },
     "nixos-mailserver": {
diff --git a/flake.nix b/flake.nix
index 8261d6b..1163e98 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,9 +2,9 @@
   description = "hacc infra stuff";
 
   inputs = {
-    mattermost-webapp.url = "https://releases.mattermost.com/9.5.1/mattermost-9.5.1-linux-amd64.tar.gz";
+    mattermost-webapp.url = "https://releases.mattermost.com/9.5.2/mattermost-9.5.2-linux-amd64.tar.gz";
     mattermost-webapp.flake = false;
-    mattermost-server.url = "github:mattermost/mattermost?ref=v9.5.1";
+    mattermost-server.url = "github:mattermost/mattermost?ref=v9.5.2";
     mattermost-server.flake = false;
 
     nixpkgs.url = "nixpkgs/nixos-23.11";
diff --git a/pkgs/mattermost.nix b/pkgs/mattermost.nix
index 5fa8508..b535513 100644
--- a/pkgs/mattermost.nix
+++ b/pkgs/mattermost.nix
@@ -13,7 +13,7 @@ buildGoModule rec {
   # See https://docs.mattermost.com/upgrade/extended-support-release.html
   # When a new ESR version is available (e.g. 8.1.x -> 9.5.x), update
   # the version regex in passthru.updateScript as well.
-  version = "9.5.1";
+  version = "9.5.2";
 
   src = sources.mattermost-server;
   webapp = sources.mattermost-webapp;