diff --git a/pkgs/servers/mattermost/default.nix b/pkgs/servers/mattermost/default.nix
index 0b9a7a51da69..0abe7e659e27 100644
--- a/pkgs/servers/mattermost/default.nix
+++ b/pkgs/servers/mattermost/default.nix
@@ -8,21 +8,28 @@
 
 buildGoModule rec {
   pname = "mattermost";
-  version = "8.1.7";
+  version = "8.1.10";
 
   src = fetchFromGitHub {
     owner = "mattermost";
     repo = "mattermost";
     rev = "v${version}";
-    hash = "sha256-ZpjdJ1Uck0kM+togUKpxRij8V0jQX+12Meks+L1Tc90=";
+    hash = "sha256-eloO83koCNZOR/NYzUCdKOtVdF7rk+VrZ9U2bKWkxNU=";
   } + "/server";
 
+  # this can probably be removed again in versions newer than 8.1.10
+  overrideModAttrs = (_: {
+    preBuild = ''
+      go mod tidy
+    '';
+  });
+
   webapp = fetchurl {
     url = "https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz";
-    hash = "sha256-eORIoZLoxWdvuRlirJ7djBTgueIzlzIhRAoURy58zCA=";
+    hash = "sha256-qxFW/P+INcMKSzaGZtOOr1Mi/glgZeiKvQ+YN0qX070=";
   };
 
-  vendorHash = "sha256-RPnCAxksKppsjVtZYhwcoJuAmMJ85AstuoBFChKwAOk=";
+  vendorHash = "sha256-ZbLSxG9Gyhk7PBC2V6sMtrQNXvm+ugMfliFIHWO1VLs=";
 
   subPackages = [ "cmd/mattermost" ];
 
@@ -37,6 +44,7 @@ buildGoModule rec {
     "-X github.com/mattermost/mattermost/server/public/model.BuildHash=v${version}"
     "-X github.com/mattermost/mattermost/server/public/model.BuildHashEnterprise=none"
     "-X github.com/mattermost/mattermost/server/public/model.BuildEnterpriseReady=false"
+    "-X github.com/mattermost/mattermost/server/public/model.MockCWS=false"
   ];
 
   postInstall = ''