diff --git a/pkgs/development/python-modules/pillow/default.nix b/pkgs/development/python-modules/pillow/default.nix
index 57b085a54051..c1df3ce27513 100644
--- a/pkgs/development/python-modules/pillow/default.nix
+++ b/pkgs/development/python-modules/pillow/default.nix
@@ -1,6 +1,8 @@
 { lib, stdenv, buildPythonPackage, fetchPypi, isPyPy, isPy3k
 , defusedxml, olefile, freetype, libjpeg, zlib, libtiff, libwebp, tcl, lcms2, tk, libX11
 , libxcb, openjpeg, libimagequant, pyroma, numpy, pytestCheckHook
+# for passthru.tests
+, imageio, matplotlib, pilkit, pydicom, reportlab
 }@args:
 
 import ./generic.nix (rec {
@@ -14,6 +16,10 @@ import ./generic.nix (rec {
     sha256 = "0gjry0yqryd2678sm47jhdnbghzxn5wk8pgyaqwr4qi7x5ijjvpf";
   };
 
+  passthru.tests = {
+    inherit imageio matplotlib pilkit pydicom reportlab;
+  };
+
   meta = with lib; {
     homepage = "https://python-pillow.org/";
     description = "The friendly PIL fork (Python Imaging Library)";
diff --git a/pkgs/development/python-modules/pillow/generic.nix b/pkgs/development/python-modules/pillow/generic.nix
index 3e33f1a8aa0f..97c67fd5fa49 100644
--- a/pkgs/development/python-modules/pillow/generic.nix
+++ b/pkgs/development/python-modules/pillow/generic.nix
@@ -3,13 +3,14 @@
 , disabled
 , src
 , meta
+, passthru ? {}
 , ...
 }@args:
 
 with args;
 
 buildPythonPackage rec {
-  inherit pname version src meta;
+  inherit pname version src meta passthru;
 
   # Disable imagefont tests, because they don't work well with infinality:
   # https://github.com/python-pillow/Pillow/issues/1259