diff --git a/poetry.lock b/poetry.lock
index e1296ec5..8dc4469e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -2256,6 +2256,20 @@ files = [
 docs = ["Sphinx (>=5.0.2)", "doc8 (>=0.11.2)", "sphinx-autobuild", "sphinx-copybutton", "sphinx-reredirects (>=0.1.2)", "sphinx-rtd-dark-mode (>=1.3.0)", "sphinx-rtd-theme (>=1.0.0)", "sphinxcontrib-apidoc (>=0.4.0)"]
 testing = ["black", "isort", "pytest (>=6,!=7.0.0)", "pytest-xdist (>=2)", "twine"]
 
+[[package]]
+name = "mailman3-fedmsg-plugin-schemas"
+version = "1.0.0"
+description = "A schema describing fedora-messaging messages sent by mailman"
+optional = true
+python-versions = ">=3.9,<4.0"
+files = [
+    {file = "mailman3_fedmsg_plugin_schemas-1.0.0-py3-none-any.whl", hash = "sha256:717b07f2de6ddb643c418832ecabb0cdb44decf8d1d0a61f5d64ba70f2caa51c"},
+    {file = "mailman3_fedmsg_plugin_schemas-1.0.0.tar.gz", hash = "sha256:1d0ebdf6bbbdec4d576451edddc1a86d19ed7e81b63b499a3f2199f3009e49b8"},
+]
+
+[package.dependencies]
+fedora-messaging = ">=3.4.1,<4.0.0"
+
 [[package]]
 name = "mako"
 version = "1.3.9"
@@ -3026,7 +3040,6 @@ files = [
     {file = "psycopg2-2.9.10-cp311-cp311-win_amd64.whl", hash = "sha256:0435034157049f6846e95103bd8f5a668788dd913a7c30162ca9503fdf542cb4"},
     {file = "psycopg2-2.9.10-cp312-cp312-win32.whl", hash = "sha256:65a63d7ab0e067e2cdb3cf266de39663203d38d6a8ed97f5ca0cb315c73fe067"},
     {file = "psycopg2-2.9.10-cp312-cp312-win_amd64.whl", hash = "sha256:4a579d6243da40a7b3182e0430493dbd55950c493d8c68f4eec0b302f6bbf20e"},
-    {file = "psycopg2-2.9.10-cp313-cp313-win_amd64.whl", hash = "sha256:91fd603a2155da8d0cfcdbf8ab24a2d54bca72795b90d2a3ed2b6da8d979dee2"},
     {file = "psycopg2-2.9.10-cp39-cp39-win32.whl", hash = "sha256:9d5b3b94b79a844a986d029eee38998232451119ad653aea42bb9220a8c5066b"},
     {file = "psycopg2-2.9.10-cp39-cp39-win_amd64.whl", hash = "sha256:88138c8dedcbfa96408023ea2b0c369eda40fe5d75002c0964c78f46f11fa442"},
     {file = "psycopg2-2.9.10.tar.gz", hash = "sha256:12ec0b40b0273f95296233e8750441339298e6a572f7039da5b260e3c8b60e11"},
@@ -5004,7 +5017,7 @@ api = ["SQLAlchemy", "backoff", "cashews", "fastapi", "fedora-messaging", "httpx
 consumer = ["SQLAlchemy", "aio-pika", "backoff", "cashews", "fedora-messaging", "sqlalchemy-helpers"]
 database = ["SQLAlchemy", "alembic", "sqlalchemy-helpers"]
 postgresql = ["asyncpg", "psycopg2"]
-schemas = ["anitya-schema", "bodhi-messages", "bugzilla2fedmsg-schema", "ci-messages", "copr-messaging", "discourse2fedmsg-messages", "fedocal-messages", "fedora-elections-messages", "fedora-image-uploader-messages", "fedora-messaging-git-hook-messages", "fedora-messaging-the-new-hotness-schema", "fedora-planet-messages", "fedorainfra-ansible-messages", "fmn-messages", "kerneltest-messages", "koji-fedoramessaging-messages", "koschei-messages", "maubot-fedora-messages", "mdapi-messages", "mediawiki-messages", "meetbot-messages", "noggin-messages", "nuancier-messages", "pagure-messages", "tahrir-messages", "webhook-to-fedora-messaging-messages"]
+schemas = ["anitya-schema", "bodhi-messages", "bugzilla2fedmsg-schema", "ci-messages", "copr-messaging", "discourse2fedmsg-messages", "fedocal-messages", "fedora-elections-messages", "fedora-image-uploader-messages", "fedora-messaging-git-hook-messages", "fedora-messaging-the-new-hotness-schema", "fedora-planet-messages", "fedorainfra-ansible-messages", "fmn-messages", "kerneltest-messages", "koji-fedoramessaging-messages", "koschei-messages", "mailman3-fedmsg-plugin-schemas", "maubot-fedora-messages", "mdapi-messages", "mediawiki-messages", "meetbot-messages", "noggin-messages", "nuancier-messages", "pagure-messages", "tahrir-messages", "webhook-to-fedora-messaging-messages"]
 sender-email = ["aio-pika", "aiosmtplib", "tomli"]
 sender-irc = ["aio-pika", "irc", "tomli"]
 sender-matrix = ["aio-pika", "matrix-nio", "tomli"]
@@ -5013,4 +5026,4 @@ sqlite = ["aiosqlite"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "5d07b2961c75742e1c503986b2b0027e24b6b16a849539af2d12809955a14648"
+content-hash = "edd1fb932ff0310b1726750e443c78c30b7f4289fe528c2820c1e70d36607024"
diff --git a/pyproject.toml b/pyproject.toml
index 9261c82e..13582377 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -96,6 +96,7 @@ fmn-messages = {version = "*", optional = true}
 kerneltest-messages = {version = "*", optional = true}
 koji-fedoramessaging-messages = {version = "*", optional = true}
 koschei-messages = {version = "*", optional = true}
+mailman3-fedmsg-plugin-schemas = {version = "*", optional = true}
 maubot-fedora-messages = {version = "*", optional = true}
 mediawiki-messages = {version = "*", optional = true}
 meetbot-messages = {version = "*", optional = true}
@@ -183,6 +184,7 @@ schemas = [
   "kerneltest-messages",
   "koji-fedoramessaging-messages",
   "koschei-messages",
+  "mailman3-fedmsg-plugin-schemas",
   "maubot-fedora-messages",
   "mediawiki-messages",
   "meetbot-messages",