diff --git a/requirements/tools.txt b/requirements/tools.txt
index 74e88be05e..1a9da61f96 100644
--- a/requirements/tools.txt
+++ b/requirements/tools.txt
@@ -23,7 +23,7 @@ markupsafe==1.0           # via jinja2
 mccabe==0.6.1             # via flake8
 pip-tools==1.9.0
 pkginfo==1.4.1            # via twine
-pluggy==0.5.1             # via tox
+pluggy==0.5.2             # via tox
 py==1.4.34                # via pytest, tox
 pycodestyle==2.3.1        # via autopep8, flake8
 pyflakes==1.5.0           # via autoflake, flake8