diff --git a/pkgs/development/python-modules/entrypoints/default.nix b/pkgs/development/python-modules/entrypoints/default.nix
index 9ee0810571a..3f79e663455 100644
--- a/pkgs/development/python-modules/entrypoints/default.nix
+++ b/pkgs/development/python-modules/entrypoints/default.nix
@@ -4,6 +4,7 @@
 , configparser
 , pytest
 , isPy3k
+, isPy27
 }:
 
 buildPythonPackage rec {
@@ -19,8 +20,15 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = lib.optional (!isPy3k) configparser;
 
-  checkPhase = ''
-    py.test tests
+  checkPhase = let
+    # On python2 with pytest 3.9.2 (not with pytest 3.7.4) the test_bad
+    # test fails. It tests that a warning (exectly one) is thrown on a "bad"
+    # path. The pytest upgrade added some warning, resulting in two warnings
+    # being thrown.
+    # upstream: https://github.com/takluyver/entrypoints/issues/23
+    pyTestArgs = if isPy27 then "-k 'not test_bad'" else "";
+  in ''
+    py.test ${pyTestArgs} tests
   '';
 
   meta = {