diff --git a/requirements/dev.txt b/requirements/dev.txt
index 488ad02..6dae01a 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -29,7 +29,7 @@ mccabe==0.6.1             # via flake8, pylint
 packaging==16.8           # via dparse, safety
 pbr==3.1.1                # via stevedore
 pip-tools==1.11.0
-pluggy==0.5.2             # via tox
+pluggy==0.6.0             # via tox
 py==1.5.2                 # via tox
 pycodestyle==2.3.1        # via flake8
 pydocstyle==2.1.1