diff --git a/pkgs/development/ocaml-modules/magic-trace/default.nix b/pkgs/development/ocaml-modules/magic-trace/default.nix
index 1cca903398f6..8bf19a921081 100644
--- a/pkgs/development/ocaml-modules/magic-trace/default.nix
+++ b/pkgs/development/ocaml-modules/magic-trace/default.nix
@@ -5,6 +5,7 @@
   ocaml-crunch,
   angstrom,
   async,
+  camlzip,
   cohttp,
   cohttp_static_handler ? null,
   core,
@@ -14,11 +15,12 @@
   ppx_jane,
   re,
   shell ? null,
+  zstandard ? null,
 }:
 
 buildDunePackage rec {
   pname = "magic-trace";
-  version = "1.2.3";
+  version = "1.2.4";
 
   minimalOCamlVersion = "4.12";
 
@@ -26,7 +28,7 @@ buildDunePackage rec {
     owner = "janestreet";
     repo = "magic-trace";
     rev = "v${version}";
-    hash = "sha256-cAoaAXZOeWNQh6emm17a9oCis8s4jJxPQMI/NfiUa7g=";
+    hash = "sha256-LkhnlOd5rI8cbOYbVqrkRJ2qTcRn3Zzl6GjQEdjBjVA=";
   };
 
   nativeBuildInputs = [
@@ -35,6 +37,7 @@ buildDunePackage rec {
   buildInputs = [
     angstrom
     async
+    camlzip
     cohttp
     cohttp_static_handler
     core
@@ -44,6 +47,7 @@ buildDunePackage rec {
     ppx_jane
     re
     shell
+    zstandard
   ];
 
   meta = with lib; {