diff --git a/requirements.txt b/requirements.txt
index 1d73e39..af49470 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,18 +4,35 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-certifi==2017.7.27.1      # via requests
-chardet==3.0.4            # via requests
-click==6.7                # via python-dotenv
+certifi==2022.12.7
+    # via requests
+chardet==3.0.4
+    # via requests
+click==6.7
+    # via python-dotenv
 dj-database-url==0.4.2
+    # via -r requirements.in
+django==1.11.6
+    # via
+    #   -r requirements.in
+    #   django-anymail
 django-anymail[mailgun]==1.0
+    # via -r requirements.in
 django-registration-redux==1.8
-django==1.11.6
+    # via -r requirements.in
 gunicorn==19.7.1
-idna==2.6                 # via requests
+    # via -r requirements.in
+idna==2.6
+    # via requests
 psycopg2==2.7.3.2
+    # via -r requirements.in
 python-dotenv==0.7.1
-pytz==2017.2              # via django
-requests==2.18.4          # via django-anymail
-six==1.11.0               # via django-anymail
-urllib3==1.22             # via requests
+    # via -r requirements.in
+pytz==2017.2
+    # via django
+requests==2.18.4
+    # via django-anymail
+six==1.11.0
+    # via django-anymail
+urllib3==1.22
+    # via requests