diff --git a/pkgs/tools/security/ggshield/default.nix b/pkgs/tools/security/ggshield/default.nix
index b05329f614ad..93c16cf75cac 100644
--- a/pkgs/tools/security/ggshield/default.nix
+++ b/pkgs/tools/security/ggshield/default.nix
@@ -7,19 +7,19 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "ggshield";
-  version = "1.33.0";
+  version = "1.34.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "GitGuardian";
     repo = "ggshield";
     rev = "refs/tags/v${version}";
-    hash = "sha256-qvvCBJ56wC56p6tOCb5hh+J7Y/Hec/YgDKNmDbbWNig=";
+    hash = "sha256-RNQD862m1p8ooFbV8k7yDW9GzP5vPQ8hgerMpvDdXAs=";
   };
 
   pythonRelaxDeps = true;
 
-  build-system = with python3.pkgs; [ setuptools ];
+  build-system = with python3.pkgs; [ pdm-backend ];
 
 
   dependencies = with python3.pkgs; [