diff --git a/pkgs/development/python-modules/pysam/default.nix b/pkgs/development/python-modules/pysam/default.nix
index 3553d9540381..da739b495b11 100644
--- a/pkgs/development/python-modules/pysam/default.nix
+++ b/pkgs/development/python-modules/pysam/default.nix
@@ -13,6 +13,7 @@
   setuptools,
   samtools,
   zlib,
+  nix-update-script,
 }:
 
 buildPythonPackage rec {
@@ -79,6 +80,8 @@ buildPythonPackage rec {
     "pysam.libcsamtools"
   ];
 
+  passthru.updateScript = nix-update-script { };
+
   meta = {
     description = "Python module for reading, manipulating and writing genome data sets";
     downloadPage = "https://github.com/pysam-developers/pysam";