diff --git a/pkgs/development/python2-modules/mock/default.nix b/pkgs/development/python2-modules/mock/default.nix
deleted file mode 100644
index d65fede054b5..000000000000
--- a/pkgs/development/python2-modules/mock/default.nix
+++ /dev/null
@@ -1,45 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchPypi,
-  isPy27,
-  funcsigs,
-  six,
-  pbr,
-  unittestCheckHook,
-}:
-
-buildPythonPackage rec {
-  pname = "mock";
-  version = "3.0.5";
-  format = "setuptools";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "83657d894c90d5681d62155c82bda9c1187827525880eda8ff5df4ec813437c3";
-  };
-
-  propagatedBuildInputs = [
-    six
-    pbr
-  ]
-  ++ lib.optionals isPy27 [ funcsigs ];
-
-  # On PyPy for Python 2.7 in particular, Mock's tests have a known failure.
-  # Mock upstream has a decoration to disable the failing test and make
-  # everything pass, but it is not yet released. The commit:
-  # https://github.com/testing-cabal/mock/commit/73bfd51b7185#diff-354f30a63fb0907d4ad57269548329e3L12
-  #doCheck = !(python.isPyPy && python.isPy27);
-  doCheck = false; # Infinite recursion pytest
-
-  nativeCheckInputs = [
-    unittestCheckHook
-  ];
-
-  meta = {
-    description = "Mock objects for Python";
-    homepage = "http://python-mock.sourceforge.net/";
-    license = lib.licenses.bsd2;
-  };
-
-}
diff --git a/pkgs/development/python2-modules/pip/default.nix b/pkgs/development/python2-modules/pip/default.nix
index 2ccdf3ca4189..e0b6b001cb3e 100644
--- a/pkgs/development/python2-modules/pip/default.nix
+++ b/pkgs/development/python2-modules/pip/default.nix
@@ -3,7 +3,6 @@
   buildPythonPackage,
   bootstrapped-pip,
   fetchFromGitHub,
-  mock,
   scripttest,
   virtualenv,
   pretend,
@@ -29,7 +28,6 @@ buildPythonPackage rec {
   pipInstallFlags = [ "--ignore-installed" ];
 
   nativeCheckInputs = [
-    mock
     scripttest
     virtualenv
     pretend
diff --git a/pkgs/top-level/python2-packages.nix b/pkgs/top-level/python2-packages.nix
index 0f8b544c1959..41ba19d8799e 100644
--- a/pkgs/top-level/python2-packages.nix
+++ b/pkgs/top-level/python2-packages.nix
@@ -33,7 +33,7 @@ with super;
 
   markupsafe = disabled super.markupsafe;
 
-  mock = callPackage ../development/python2-modules/mock { };
+  mock = disabled super.mock;
 
   more-itertools = callPackage ../development/python2-modules/more-itertools { };