diff --git a/pkgs/development/python-modules/rubicon-objc/default.nix b/pkgs/development/python-modules/rubicon-objc/default.nix
index cab1a5684b8d..4e9d1775a0c2 100644
--- a/pkgs/development/python-modules/rubicon-objc/default.nix
+++ b/pkgs/development/python-modules/rubicon-objc/default.nix
@@ -10,7 +10,7 @@
 
 buildPythonPackage rec {
   pname = "rubicon-objc";
-  version = "0.5.1";
+  version = "0.5.2";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -19,13 +19,12 @@ buildPythonPackage rec {
     owner = "beeware";
     repo = "rubicon-objc";
     tag = "v${version}";
-    hash = "sha256-HnPp7VUrcTfkl5XdXYasydMqxhp7eb7r5RW/7yRWmko=";
+    hash = "sha256-ahlsY4eU9n+BRexE4wNVXMcgSiGW7pU25zJif9lGTUs=";
   };
 
   postPatch = ''
-    substituteInPlace pyproject.toml \
-      --replace-fail "setuptools==75.7.0" "setuptools" \
-      --replace-fail "setuptools_scm==8.1.0" "setuptools_scm"
+    sed -i 's/"setuptools==.*"/"setuptools"/' pyproject.toml
+    sed -i 's/"setuptools_scm==.*"/"setuptools_scm"/' pyproject.toml
   '';
 
   build-system = [