diff --git a/pkgs/servers/matrix-synapse/sliding-sync/default.nix b/pkgs/servers/matrix-synapse/sliding-sync/default.nix
index aab70aa8ae3b..7b30a8df6811 100644
--- a/pkgs/servers/matrix-synapse/sliding-sync/default.nix
+++ b/pkgs/servers/matrix-synapse/sliding-sync/default.nix
@@ -5,16 +5,16 @@
 
 buildGoModule rec {
   pname = "matrix-sliding-sync";
-  version = "0.99.8";
+  version = "0.99.9";
 
   src = fetchFromGitHub {
     owner = "matrix-org";
     repo = "sliding-sync";
     rev = "refs/tags/v${version}";
-    hash = "sha256-4rYLHUlHbQ6KnxyXCCLqG4/zfXdZm4KZX1cOg5ITQPk=";
+    hash = "sha256-ksXNyllev0GqKmbq3fMQ4bv3YsvUMzgpsu45zmwyLFs=";
   };
 
-  vendorHash = "sha256-JYSpjAgIvQFpYmOTifRXHVB6bSrukqSVhmAAmHylPbQ=";
+  vendorHash = "sha256-E3nCcw6eTKKcL55ls6n5pYlRFffsefsN0G1Hwd49uh8=";
 
   subPackages = [ "cmd/syncv3" ];