diff --git a/docs/parameterstore.md b/docs/parameterstore.md
index 81bdd5e8e..b0423f9c4 100644
--- a/docs/parameterstore.md
+++ b/docs/parameterstore.md
@@ -15,3 +15,5 @@ AWS parameter store is used to store secrets and values that we then use to expo
 - `WDIV_API_KEY`
 - `FIREHOSE_ACCOUNT_ARN`
 - `AKISMET_API_KEY`
+- `EMAIL_SIGNUP_EVENT_BRIDGE_ARN` - For mailing list signups. See the developer
+  handbook for values per account type
diff --git a/requirements/base.txt b/requirements/base.txt
index 7357250a3..dabcd24e5 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -15,7 +15,7 @@ redis==4.6.0
 icalendar==5.0.7
 dealer==2.1.0
 
-https://github.com/DemocracyClub/dc_signup_form/archive/refs/tags/2.2.0.tar.gz
+https://github.com/DemocracyClub/dc_signup_form/archive/refs/tags/2.3.0.tar.gz
 https://github.com/DemocracyClub/design-system/archive/refs/tags/0.2.4.tar.gz
 https://github.com/DemocracyClub/dc_django_utils/archive/refs/tags/2.3.0.tar.gz
 git+https://github.com/DemocracyClub/dc_logging.git@0.0.9
diff --git a/wcivf/apps/mailing_list/urls.py b/wcivf/apps/mailing_list/urls.py
index 77ff11063..a99b82517 100644
--- a/wcivf/apps/mailing_list/urls.py
+++ b/wcivf/apps/mailing_list/urls.py
@@ -14,6 +14,7 @@
                 template_name="base.html",
                 form_class=MailingListSignupForm,
                 backend=settings.EMAIL_SIGNUP_BACKEND,
+                backend_kwargs=settings.EMAIL_SIGNUP_BACKEND_KWARGS,
             )
         ),
         name="mailing_list_signup_view",
diff --git a/wcivf/settings/base.py b/wcivf/settings/base.py
index ed47c89a3..18557b942 100644
--- a/wcivf/settings/base.py
+++ b/wcivf/settings/base.py
@@ -232,11 +232,11 @@ def repo_root(*x):
 ROBOTS_USE_HOST = False
 USE_X_FORWARDED_HOST = True
 
-EMAIL_SIGNUP_ENDPOINT = (
-    "https://democracyclub.org.uk/mailing_list/api_signup/v1/"
-)
-EMAIL_SIGNUP_API_KEY = os.environ.get("EMAIL_SIGNUP_API_KEY", "")
-EMAIL_SIGNUP_BACKEND = "remote_db"
+EMAIL_SIGNUP_BACKEND = "event_bridge"
+EMAIL_SIGNUP_BACKEND_KWARGS = {
+    "source": "WCIVF",
+    "bus_arn": os.environ.get("EMAIL_SIGNUP_EVENT_BRIDGE_ARN"),
+}
 
 # DC Base Theme settings
 SITE_TITLE = "Who Can I Vote For?"