diff --git a/requirements.txt b/requirements.txt
index 1d73e39..ab00862 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,14 +7,14 @@
 certifi==2017.7.27.1      # via requests
 chardet==3.0.4            # via requests
 click==6.7                # via python-dotenv
-dj-database-url==0.4.2
-django-anymail[mailgun]==1.0
-django-registration-redux==1.8
-django==1.11.6
-gunicorn==19.7.1
+dj-database-url==0.4.2    # via -r requirements.in
+django-anymail[mailgun]==1.0  # via -r requirements.in
+django-registration-redux==1.8  # via -r requirements.in
+django==1.11.29           # via -r requirements.in, django-anymail
+gunicorn==19.7.1          # via -r requirements.in
 idna==2.6                 # via requests
-psycopg2==2.7.3.2
-python-dotenv==0.7.1
+psycopg2==2.7.3.2         # via -r requirements.in
+python-dotenv==0.7.1      # via -r requirements.in
 pytz==2017.2              # via django
 requests==2.18.4          # via django-anymail
 six==1.11.0               # via django-anymail