diff --git a/pkgs/applications/misc/kiwix/tools.nix b/pkgs/applications/misc/kiwix/tools.nix
index e8564a7ff77b..244aec6bd526 100644
--- a/pkgs/applications/misc/kiwix/tools.nix
+++ b/pkgs/applications/misc/kiwix/tools.nix
@@ -1,5 +1,6 @@
 {
   lib,
+  docopt_cpp,
   fetchFromGitHub,
   gitUpdater,
   icu,
@@ -12,13 +13,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "kiwix-tools";
-  version = "3.7.0";
+  version = "3.7.0-unstable-2024-12-21";
 
   src = fetchFromGitHub {
     owner = "kiwix";
     repo = "kiwix-tools";
-    rev = finalAttrs.version;
-    hash = "sha256-JwF4EN5kyHEfNoMhHb9ywe+7pmgQtjEd2FeRUeTjvQw=";
+    rev = "43b00419dd3f33eb644e1d83c2e802fc200b2de7";
+    hash = "sha256-Rctb6ZPTXjgSrLRB5VK4CEqYHuEPB7a+SQaNi47cxv0=";
   };
 
   nativeBuildInputs = [
@@ -28,6 +29,7 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   buildInputs = [
+    docopt_cpp
     icu
     libkiwix
   ];