diff --git a/pkgs/patches/pytest/setuptools.patch b/pkgs/patches/pytest/setuptools.patch
--- a/pkgs/patches/pytest/setuptools.patch
+++ b/pkgs/patches/pytest/setuptools.patch
@@ -1,7 +1,7 @@
-diff -rup pytest-4.6.5-orig/setup.py pytest-4.6.5/setup.py
---- pytest-4.6.5-orig/setup.py	2018-04-10 10:23:04.000000000 +0200
-+++  pytest-4.6.5/setup.py	2018-04-10 10:23:34.000000000 +0200
-@@ -24,7 +24,7 @@ INSTALL_REQUIRES = [
+diff -rup pytest-4.6.9-orig/setup.py pytest-4.6.9/setup.py
+--- pytest-4.6.9-orig/setup.py	2018-04-10 10:23:04.000000000 +0200
++++  pytest-4.6.9/setup.py	2018-04-10 10:23:34.000000000 +0200
+@@ -24,7 +24,7 @@ def main():
  def main():
      setup(
          use_scm_version={"write_to": "src/_pytest/_version.py"},
diff --git a/pkgs/python-packages-overrides.nix b/pkgs/python-packages-overrides.nix
--- a/pkgs/python-packages-overrides.nix
+++ b/pkgs/python-packages-overrides.nix
@@ -29,7 +29,7 @@ self: super: {
 
   "gevent" = super."gevent".override (attrs: {
     propagatedBuildInputs = attrs.propagatedBuildInputs ++ [
-      # NOTE: (marcink) odd requirements from gevent aren not set properly,
+      # NOTE: (marcink) odd requirements from gevent aren't set properly,
       # thus we need to inject psutil manually
       self."psutil"
     ];
diff --git a/pkgs/python-packages.nix b/pkgs/python-packages.nix
--- a/pkgs/python-packages.nix
+++ b/pkgs/python-packages.nix
@@ -569,11 +569,11 @@ self: super: {
     };
   };
   "py" = super.buildPythonPackage {
-    name = "py-1.8.0";
+    name = "py-1.8.1";
     doCheck = false;
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/f1/5a/87ca5909f400a2de1561f1648883af74345fe96349f34f737cdfc94eba8c/py-1.8.0.tar.gz";
-      sha256 = "0lsy1gajva083pzc7csj1cvbmminb7b4l6a0prdzyb3fd829nqyw";
+      url = "https://files.pythonhosted.org/packages/bd/8f/169d08dcac7d6e311333c96b63cbe92e7947778475e1a619b674989ba1ed/py-1.8.1.tar.gz";
+      sha256 = "1ajjazg3913n0sp3vjyva9c2qh5anx8ziryng935f89604a0h9sy";
     };
     meta = {
       license = [ pkgs.lib.licenses.mit ];
@@ -666,7 +666,7 @@ self: super: {
     };
   };
   "pytest" = super.buildPythonPackage {
-    name = "pytest-4.6.5";
+    name = "pytest-4.6.9";
     doCheck = false;
     propagatedBuildInputs = [
       self."py"
@@ -682,23 +682,23 @@ self: super: {
       self."more-itertools"
     ];
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/2a/c6/1d1f32f6a5009900521b12e6560fb6b7245b0d4bc3fb771acd63d10e30e1/pytest-4.6.5.tar.gz";
-      sha256 = "0iykwwfp4h181nd7rsihh2120b0rkawlw7rvbl19sgfspncr3hwg";
+      url = "https://files.pythonhosted.org/packages/ec/2e/1602fca477ab3ccb1952f07db0536b60b6afafec16eced8063b553001509/pytest-4.6.9.tar.gz";
+      sha256 = "0fgkmpc31nzy97fxfrkqbzycigdwxwwmninx3qhkzp81migggs0r";
     };
     meta = {
       license = [ pkgs.lib.licenses.mit ];
     };
   };
   "pytest-cov" = super.buildPythonPackage {
-    name = "pytest-cov-2.7.1";
+    name = "pytest-cov-2.8.1";
     doCheck = false;
     propagatedBuildInputs = [
       self."pytest"
       self."coverage"
     ];
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/bb/0f/3db7ff86801883b21d5353b258c994b1b8e2abbc804e2273b8d0fd19004b/pytest-cov-2.7.1.tar.gz";
-      sha256 = "0filvmmyqm715azsl09ql8hy2x7h286n6d8z5x42a1wpvvys83p0";
+      url = "https://files.pythonhosted.org/packages/13/8a/51f54b43a043c799bceca846594b9a310823a3e52df5ec27109cccba90f4/pytest-cov-2.8.1.tar.gz";
+      sha256 = "0avzlk9p4nc44k7lpx9109dybq71xqnggxb9f4hp0l64pbc44ryc";
     };
     meta = {
       license = [ pkgs.lib.licenses.bsdOriginal pkgs.lib.licenses.mit ];
@@ -721,18 +721,18 @@ self: super: {
     };
   };
   "pytest-runner" = super.buildPythonPackage {
-    name = "pytest-runner-5.1";
+    name = "pytest-runner-5.2";
     doCheck = false;
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/d9/6d/4b41a74b31720e25abd4799be72d54811da4b4d0233e38b75864dcc1f7ad/pytest-runner-5.1.tar.gz";
-      sha256 = "0ykfcnpp8c22winj63qzc07l5axwlc9ikl8vn05sc32gv3417815";
+      url = "https://files.pythonhosted.org/packages/5b/82/1462f86e6c3600f2471d5f552fcc31e39f17717023df4bab712b4a9db1b3/pytest-runner-5.2.tar.gz";
+      sha256 = "0awll1bva5zy8cspsxcpv7pjcrdf5c6pf56nqn4f74vvmlzfgiwn";
     };
     meta = {
       license = [ pkgs.lib.licenses.mit ];
     };
   };
   "pytest-sugar" = super.buildPythonPackage {
-    name = "pytest-sugar-0.9.2";
+    name = "pytest-sugar-0.9.3";
     doCheck = false;
     propagatedBuildInputs = [
       self."pytest"
@@ -740,8 +740,8 @@ self: super: {
       self."packaging"
     ];
     src = fetchurl {
-      url = "https://files.pythonhosted.org/packages/55/59/f02f78d1c80f7e03e23177f60624c8106d4f23d124c921df103f65692464/pytest-sugar-0.9.2.tar.gz";
-      sha256 = "1asq7yc4g8bx2sn7yy974mhc9ywvaihasjab4inkirdwn9s7mn7w";
+      url = "https://files.pythonhosted.org/packages/ba/35/edf24df4b2fe7d9005bdb9d166c18ae9cefd8b664e7fb2c8dfb7bc9db184/pytest-sugar-0.9.3.tar.gz";
+      sha256 = "1i0hv3h49zvl62jbiyjag84carbrp3zprqzxffdr291nxavvac0n";
     };
     meta = {
       license = [ pkgs.lib.licenses.bsdOriginal ];
diff --git a/requirements_test.txt b/requirements_test.txt
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,9 +1,9 @@
 # test related requirements
-pytest==4.6.5
-py==1.8.0
-pytest-cov==2.7.1
-pytest-sugar==0.9.2
-pytest-runner==5.1.0
+pytest==4.6.9
+py==1.8.1
+pytest-cov==2.8.1
+pytest-sugar==0.9.3
+pytest-runner==5.2.0
 pytest-profiling==1.7.0
 pytest-timeout==1.3.3
 gprof2dot==2017.9.19