diff --git a/pkgs/tools/graphics/dmtx-utils/default.nix b/pkgs/tools/graphics/dmtx-utils/default.nix
index f4cc746a24f3..f03f38742e19 100644
--- a/pkgs/tools/graphics/dmtx-utils/default.nix
+++ b/pkgs/tools/graphics/dmtx-utils/default.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "dmtx-utils";
-  version = "0.7.6";
+  version = "0.7.6-unstable-2023-09-21";
 
   src = fetchFromGitHub {
     owner = "dmtx";
     repo = "dmtx-utils";
-    rev = "v${version}";
-    sha256 = "06m3qncqdlcnmw83n95yrx2alaq6bld320ax26z4ndnla41yk0p4";
+    rev = "057faa00143c152e8e21c29a36137f771614daed";
+    hash = "sha256-uXzPAv6DappyHBNmsTg6qRUvtUUdP1IPOdDvIcevfco=";
   };
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];