diff --git a/requirements-dev.txt b/requirements-dev.txt
index 3a5ba3d..3358912 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,13 +1,13 @@
 -e .
-coverage==4.0.2
-django-coverage-plugin==1.0
-flake8==2.5.0
-isort==4.2.2
-mccabe==0.3.1
+coverage==4.1
+django-coverage-plugin==1.3.1
+flake8==2.5.4
+isort==4.2.5
+mccabe==0.5.0
 pydocstyle==1.0.0
-pep8==1.6.2
+pep8==1.7.0
 pep8-naming==0.3.3
-pre-commit==0.6.2
-py==1.4.30
-pytest==2.8.2
+pre-commit==0.8.2
+py==1.4.31
+pytest==2.9.2
 tox==2.3.1