diff --git a/pkgs/development/python-modules/green/default.nix b/pkgs/development/python-modules/green/default.nix
index 0320a3858be1..540d3027b94e 100644
--- a/pkgs/development/python-modules/green/default.nix
+++ b/pkgs/development/python-modules/green/default.nix
@@ -1,9 +1,11 @@
-{ lib, buildPythonPackage, fetchPypi, isPy3k
+{ lib
+, buildPythonPackage
+, isPy3k
+, fetchPypi
 , colorama
 , coverage
-, termstyle
-, lxml
 , unidecode
+, lxml
 }:
 
 buildPythonPackage rec {
@@ -17,13 +19,22 @@ buildPythonPackage rec {
     sha256 = "a4d86f2dfa4ccbc86f24bcb9c9ab8bf34219c876c24e9f0603aab4dfe73bb575";
   };
 
+  patches = [
+    ./tests.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace green/test/test_integration.py \
+      --subst-var-by green "$out/bin/green"
+  '';
+
   propagatedBuildInputs = [
-    colorama coverage termstyle unidecode lxml
+    colorama coverage unidecode lxml
   ];
 
   # let green run it's own test suite
   checkPhase = ''
-    $out/bin/green green
+    $out/bin/green -tvvv green
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/green/tests.patch b/pkgs/development/python-modules/green/tests.patch
new file mode 100644
index 000000000000..7e1c3be62e3f
--- /dev/null
+++ b/pkgs/development/python-modules/green/tests.patch
@@ -0,0 +1,22 @@
+diff --git a/green/test/test_integration.py b/green/test/test_integration.py
+index 0cf8cbb..40d9f6b 100644
+--- a/green/test/test_integration.py
++++ b/green/test/test_integration.py
+@@ -41,9 +41,7 @@ class TestFinalizer(unittest.TestCase):
+             )
+             fh.close()
+         args = [
+-            sys.executable,
+-            "-m",
+-            "green.cmdline",
++            "@green@",
+             "--finalizer=test_finalizer0.msg",
+             "--maxtasksperchild=1",
+         ]
+@@ -58,6 +56,5 @@ class TestFinalizer(unittest.TestCase):
+             stdout=subprocess.PIPE,
+             stderr=subprocess.STDOUT,
+             env=env,
+-            timeout=10,
+         ).stdout.decode("utf-8")
+         self.assertIn("finalizer worked", output)