diff --git a/hosts/wynne/services/apps/dendrite/default.nix b/hosts/wynne/services/apps/dendrite/default.nix
index 1a1cb74..5bc27f9 100644
--- a/hosts/wynne/services/apps/dendrite/default.nix
+++ b/hosts/wynne/services/apps/dendrite/default.nix
@@ -50,27 +50,40 @@ in
       environmentFile = config.sops.secrets."matrix/syncv3_secret".path;
     };
   };
-  systemd.services.dendrite = {
-    description = "Dendrite Matrix homeserver";
-    after = [ "network.target" ];
-    wantedBy = [ "multi-user.target" ];
-    unitConfig.RequiresMountsFor = [ "/mnt/data" ];
-    serviceConfig = {
-      Type = "simple";
-      User = "dendrite";
-      Group = "dendrite";
-      StateDirectory = "dendrite";
-      WorkingDirectory = "/mnt/data/dendrite";
-      RuntimeDirectory = "dendrite";
-      RuntimeDirectoryMode = "0700";
-      LimitNOFILE = 65535;
-      ExecStart = ''
-        ${pkgs.dendrite}/bin/dendrite -http-bind-address 127.0.0.1:8008 -config ${./config.yaml}
-      '';
-      ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
-      Restart = "on-failure";
+  systemd.services.dendrite =
+    let
+      dendrite_package = pkgs.dendrite.overrideAttrs rec {
+        version = "0.13.8";
+        src = pkgs.fetchFromGitHub {
+          owner = "matrix-org";
+          repo = "dendrite";
+          rev = "v${version}";
+          hash = "sha256-zUpZdG2cdZ95L70qLG2HaUlD+G66XTi4f1V4+ZZAh30=";
+        };
+        vendorHash = "sha256-rGOB1ikY3BgChvD1YZUF66g8P6gE29b/k9kxvHR0+WQ=";
+      };
+    in
+    {
+      description = "Dendrite Matrix homeserver";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      unitConfig.RequiresMountsFor = [ "/mnt/data" ];
+      serviceConfig = {
+        Type = "simple";
+        User = "dendrite";
+        Group = "dendrite";
+        StateDirectory = "dendrite";
+        WorkingDirectory = "/mnt/data/dendrite";
+        RuntimeDirectory = "dendrite";
+        RuntimeDirectoryMode = "0700";
+        LimitNOFILE = 65535;
+        ExecStart = ''
+          ${dendrite_package}/bin/dendrite -http-bind-address 127.0.0.1:8008 -config ${./config.yaml}
+        '';
+        ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
+        Restart = "on-failure";
+      };
     };
-  };
   users.users.dendrite = {
     name = "dendrite";
     description = "Dendrite server user";