diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4502080..38bd28a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,8 +2,8 @@
 --requirement requirements.txt
 
 # Testing
-pytest==2.8.5
-pytest-cov==2.0.0
+pytest==3.2.2
+pytest-cov==2.5.1
 
 # Documentation
-Sphinx==1.3.1
+Sphinx==1.6.3