diff --git a/pkgs/development/python-modules/cryptodatahub/default.nix b/pkgs/development/python-modules/cryptodatahub/default.nix
index cf0d617e0abd..cd1870d2a227 100644
--- a/pkgs/development/python-modules/cryptodatahub/default.nix
+++ b/pkgs/development/python-modules/cryptodatahub/default.nix
@@ -60,6 +60,8 @@ buildPythonPackage (finalAttrs: {
     "test/common/test_utils.py"
   ];
 
+  passthru.updateScript = ./update.sh;
+
   meta = {
     description = "Repository of cryptography-related data";
     homepage = "https://gitlab.com/coroner/cryptodatahub";
diff --git a/pkgs/development/python-modules/cryptodatahub/update.sh b/pkgs/development/python-modules/cryptodatahub/update.sh
new file mode 100755
index 000000000000..9575e6ababdb
--- /dev/null
+++ b/pkgs/development/python-modules/cryptodatahub/update.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p nix-update
+
+set -euox pipefail
+
+nix-update python3Packages.cryptodatahub
+nix-update python3Packages.cryptoparser
+nix-update python3Packages.cryptolyzer
diff --git a/pkgs/development/python-modules/cryptolyzer/default.nix b/pkgs/development/python-modules/cryptolyzer/default.nix
index a63c19f929cd..4a8c0a5ef743 100644
--- a/pkgs/development/python-modules/cryptolyzer/default.nix
+++ b/pkgs/development/python-modules/cryptolyzer/default.nix
@@ -65,6 +65,8 @@ buildPythonPackage (finalAttrs: {
 
   pythonImportsCheck = [ "cryptolyzer" ];
 
+  passthru.updateScript = ../cryptodatahub/update.sh;
+
   meta = {
     description = "Cryptographic protocol analyzer";
     homepage = "https://gitlab.com/coroner/cryptolyzer";
diff --git a/pkgs/development/python-modules/cryptoparser/default.nix b/pkgs/development/python-modules/cryptoparser/default.nix
index 1a7eabdc3d4c..10c1a12d6db8 100644
--- a/pkgs/development/python-modules/cryptoparser/default.nix
+++ b/pkgs/development/python-modules/cryptoparser/default.nix
@@ -62,6 +62,8 @@ buildPythonPackage (finalAttrs: {
 
   pythonImportsCheck = [ "cryptoparser" ];
 
+  passthru.updateScript = ../cryptodatahub/update.sh;
+
   meta = {
     description = "Security protocol parser and generator";
     homepage = "https://gitlab.com/coroner/cryptoparser";