diff --git a/pkgs/development/python-modules/sip/default.nix b/pkgs/development/python-modules/sip/default.nix
index 067560caee50..c5059665cd78 100644
--- a/pkgs/development/python-modules/sip/default.nix
+++ b/pkgs/development/python-modules/sip/default.nix
@@ -16,19 +16,14 @@
 
 buildPythonPackage rec {
   pname = "sip";
-  version = "6.10.0";
+  version = "6.12.0";
   pyproject = true;
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-+gUVaX1MmNvgTZ6JjYFt4UJ+W5rl0OFSFpEJ/SH10pw=";
+    hash = "sha256-CDztlPhTFUkyMRGaY5cLK6QrHTizjnMKcOAqmRkaicY=";
   };
 
-  patches = [
-    # Make wheel file generation deterministic https://github.com/NixOS/nixpkgs/issues/383885
-    ./sip-builder.patch
-  ];
-
   build-system = [
     setuptools
     setuptools-scm
diff --git a/pkgs/development/python-modules/sip/sip-builder.patch b/pkgs/development/python-modules/sip/sip-builder.patch
deleted file mode 100644
index 2a7e1a5753d7..000000000000
--- a/pkgs/development/python-modules/sip/sip-builder.patch
+++ /dev/null
@@ -1,28 +0,0 @@
---- a/sipbuild/builder.py	2025-04-21 12:19:34
-+++ b/sipbuild/builder.py	2025-04-21 12:27:09
-@@ -177,16 +177,23 @@
-         saved_cwd = os.getcwd()
-         os.chdir(wheel_build_dir)
- 
--        from zipfile import ZipFile, ZIP_DEFLATED
-+        from zipfile import ZipFile, ZipInfo, ZIP_DEFLATED
-+        import time
- 
-+        epoch = int(os.environ.get('SOURCE_DATE_EPOCH', '946684800'))
-+        zip_timestamp = time.gmtime(epoch)[:6]
-+
-         with ZipFile(wheel_path, 'w', compression=ZIP_DEFLATED) as zf:
-             for dirpath, _, filenames in os.walk('.'):
-                 for filename in filenames:
-                     # This will result in a name with no leading '.'.
-                     name = os.path.relpath(os.path.join(dirpath, filename))
- 
--                    zf.write(name)
-+                    zi = ZipInfo(name, zip_timestamp)
- 
-+                    with open(name, 'rb') as f:
-+                        zf.writestr(zi, f.read())
-+
-         os.chdir(saved_cwd)
- 
-         return wheel_file