diff --git a/pkgs/development/python-modules/debianbts/default.nix b/pkgs/development/python-modules/debianbts/default.nix
index b2c2b271d61d..5390e40a2063 100644
--- a/pkgs/development/python-modules/debianbts/default.nix
+++ b/pkgs/development/python-modules/debianbts/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, nix-update-script
 , pysimplesoap
 , pytest , pytest-xdist
 , pythonOlder
@@ -13,6 +14,7 @@ buildPythonPackage rec {
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
+  passthru.updateScript = nix-update-script { };
 
   src = fetchPypi {
     inherit pname version;
diff --git a/pkgs/development/python-modules/pysimplesoap/default.nix b/pkgs/development/python-modules/pysimplesoap/default.nix
index eecf54425380..b35a6b6d6e70 100644
--- a/pkgs/development/python-modules/pysimplesoap/default.nix
+++ b/pkgs/development/python-modules/pysimplesoap/default.nix
@@ -3,13 +3,15 @@
 , fetchPypi
 , buildPythonPackage
 , m2crypto
+, nix-update-script
 }:
 
 buildPythonPackage rec {
   pname = "pysimplesoap";
-  # Unfortunately, the latest stable release is broken on Python 3.
   version = "1.16.2";
 
+  passthru.updateScript = nix-update-script { };
+
   src = fetchPypi {
     pname = "PySimpleSOAP";
     inherit version;
@@ -20,6 +22,7 @@ buildPythonPackage rec {
     m2crypto
   ];
 
+  # Patches necessary for Python 3 compatibility plus bugfixes
   patches = map (args: fetchDebianPatch ({
     inherit pname version;
     debianRevision = "5";
diff --git a/pkgs/tools/security/sudo-rs/default.nix b/pkgs/tools/security/sudo-rs/default.nix
index 6730cdf1869f..d4621e229225 100644
--- a/pkgs/tools/security/sudo-rs/default.nix
+++ b/pkgs/tools/security/sudo-rs/default.nix
@@ -3,6 +3,7 @@
 , fetchFromGitHub
 , fetchpatch
 , installShellFiles
+, nix-update-script
 , pam
 , pandoc
 , rustPlatform
@@ -72,6 +73,8 @@ rustPlatform.buildRustPackage rec {
     "su::context::tests::invalid_shell"
   ];
 
+  passthru.updateScript = nix-update-script { };
+
   meta = with lib; {
     description = "A memory safe implementation of sudo and su.";
     homepage = "https://github.com/memorysafety/sudo-rs";