diff --git a/dev-requirements.txt b/dev-requirements.txt
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -14,6 +14,6 @@ jinja2==2.8               # via flask, s
 markupsafe==0.23          # via jinja2
 pip-tools==1.1.3
 pygments==2.0.2           # via sphinx
-six==1.9.0                # via pip-tools
+six==1.10.0               # via pip-tools
 Sphinx==1.2.3
 werkzeug==0.10.4          # via flask
diff --git a/requirements.in b/requirements.in
--- a/requirements.in
+++ b/requirements.in
@@ -1,3 +1,4 @@
+Babel==2.1.1
 click==5.1
 Flask-Bootstrap==3.3.5.6
 Flask-HTTPAuth==2.6.0
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,9 +4,10 @@
 #
 #    pip-compile requirements.in
 #
+Babel==2.1.1
 blinker==1.4              # via flask-mail
 click==5.1
-dominate==2.1.12          # via flask-bootstrap
+dominate==2.1.16          # via flask-bootstrap
 Flask-Bootstrap==3.3.5.6
 Flask-HTTPAuth==2.6.0
 Flask-Mail==0.9.1
@@ -19,6 +20,7 @@ jsonschema==2.5.1
 markupsafe==0.23          # via jinja2
 pygeoip==0.3.2
 python-gnupg==0.3.7
+pytz==2015.7              # via babel
 requests==2.7.0
 strict-rfc3339==0.5
 werkzeug==0.10.4          # via flask, flask-wtf