diff --git a/pkgs/servers/mattermost/default.nix b/pkgs/servers/mattermost/default.nix
index 7439396969f4..e18bff1d3f78 100644
--- a/pkgs/servers/mattermost/default.nix
+++ b/pkgs/servers/mattermost/default.nix
@@ -7,21 +7,21 @@
 
 buildGoModule rec {
   pname = "mattermost";
-  version = "7.8.1";
+  version = "7.8.3";
 
   src = fetchFromGitHub {
     owner = "mattermost";
     repo = "mattermost-server";
     rev = "v${version}";
-    sha256 = "sha256-6aJkJCJmQHvSn5SHIPXj0nNLBuEez9BCYYMMlv3iZqQ=";
+    hash = "sha256-MJAYKBMQEf82YkDOpLHnL7Jxlz6i0K0B8E99pRxGHgc=";
   };
 
   webapp = fetchurl {
     url = "https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz";
-    sha256 = "sha256-KmzjhAkv1TpOlHtZnN/ifkQnzDqk1rN+fl4JStZRbXQ=";
+    hash = "sha256-4VOEDrCKZI5HR5U2m49Dfbs5Mc+i8l4N41jIy8+5D1k=";
   };
 
-  vendorSha256 = "sha256-VvGLYOESyoBpFmIibHWxazliHcscMxf3KcQ46NQ4syk=";
+  vendorHash = "sha256-VvGLYOESyoBpFmIibHWxazliHcscMxf3KcQ46NQ4syk=";
 
   subPackages = [ "cmd/mattermost" ];