diff --git a/pkgs/servers/mattermost/default.nix b/pkgs/servers/mattermost/default.nix
index fe2a9e0b1634..77ae99a9297e 100644
--- a/pkgs/servers/mattermost/default.nix
+++ b/pkgs/servers/mattermost/default.nix
@@ -10,7 +10,7 @@
 , storePathAsBuildHash ? false }:
 
 let
-  version = "6.3.2";
+  version = "6.3.3";
 
   goPackagePath = "github.com/mattermost/mattermost-server";
 
@@ -22,7 +22,7 @@ let
       owner = "mattermost";
       repo = "mattermost-server";
       rev = "v${version}";
-      sha256 = "+6bLkzqlcty8X+mbNkZnHzC8tK8EJwmWAYz3jZ/6q2w=";
+      sha256 = "OSN8Bscgv7rPfKIfZ3ZnegdgsygFpSM7/vGWojj0P3k=";
     };
 
     ldflags = [
@@ -65,7 +65,7 @@ let
 
     src = fetchurl {
       url = "https://releases.mattermost.com/${version}/mattermost-${version}-linux-amd64.tar.gz";
-      sha256 = "dxgoYFgW+KKtfNr+1pr7bA9K79gCXpKebTIWDhneuv0=";
+      sha256 = "Og9DUGyE4cWYF7EQP/8szIrWM1Ldqnpqc+HW+L7XApo=";
     };
 
     installPhase = ''