diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6647d01..68f20e5 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -17,5 +17,5 @@ pyflakes
 Jinja2==2.9.6
 MarkupSafe==1.0
 Pygments==2.2.0
-Sphinx==1.6.3
-docutils==0.13.1
+Sphinx==1.6.5
+docutils==0.14
diff --git a/requirements.txt b/requirements.txt
index e85ba74..08fe557 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ argh>=0.24.1
 pathtools>=0.1.2
 PyYAML>=3.10
 tornado>=3.2
-port_for==0.3.1
+port-for==0.4
 livereload>=2.3.0