diff --git a/poetry.lock b/poetry.lock
index 38235fc..3258a2a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.7.0 and should not be changed by hand.
 
 [[package]]
 name = "amqp"
@@ -281,6 +281,20 @@ sqlparse = ">=0.2.2"
 argon2 = ["argon2-cffi (>=19.1.0)"]
 bcrypt = ["bcrypt"]
 
+[[package]]
+name = "django-more-admin-filters"
+version = "1.7"
+description = "Additional filters for django-admin."
+optional = false
+python-versions = "*"
+files = [
+    {file = "django-more-admin-filters-1.7.tar.gz", hash = "sha256:67fad47ea63d8ac1f0f1c3a25850004197656cb573b2d1584077d6765b9354ef"},
+    {file = "django_more_admin_filters-1.7-py3-none-any.whl", hash = "sha256:b2162a084d7233c4d892cf6a0d0ae8a0b9bc0213815fbb8840df8e0b970c8c07"},
+]
+
+[package.dependencies]
+Django = ">=2.2,<5.0"
+
 [[package]]
 name = "django-polymorphic"
 version = "3.1.0"
@@ -862,4 +876,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.7.2,<4.0"
-content-hash = "8a364b040a969b4a84509b41f353b30b37c71567846dd5f2def48717e6f01ed6"
+content-hash = "7627d2bdf91924d65b57d4ad7a73585fd74b84990c56ec42bc56677a9148c4ef"
diff --git a/pyproject.toml b/pyproject.toml
index de2283e..d67f29e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ python = ">=3.7.2,<4.0"
 Django = ">=3"
 django-polymorphic = "^3"
 celery = ">=4.4"
+django-more-admin-filters = "^1.7"
 
 [tool.poetry.group.dev.dependencies]
 flake8 = "^5.0.4"
diff --git a/tests/app/settings.py b/tests/app/settings.py
index 7db1149..37ad187 100644
--- a/tests/app/settings.py
+++ b/tests/app/settings.py
@@ -38,6 +38,7 @@
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'more_admin_filters',
     'polymorphic',
     'triggers',
     'tests.app',
diff --git a/triggers/admin.py b/triggers/admin.py
index c95c5a8..47353e5 100644
--- a/triggers/admin.py
+++ b/triggers/admin.py
@@ -3,6 +3,7 @@
 from django.contrib import admin
 from django.utils.html import format_html_join
 from django.utils.translation import gettext_lazy as _
+from more_admin_filters import MultiSelectRelatedOnlyFilter
 from polymorphic.admin import PolymorphicInlineSupportMixin, StackedPolymorphicInline
 from polymorphic.models import PolymorphicModel
 
@@ -52,7 +53,7 @@ class EventInline(StackedPolymorphicInline):
     child_inlines = generate_child_inlines(Event)
 
 
-class RelatedOnlyFieldListFilter(admin.RelatedOnlyFieldListFilter):
+class RelatedOnlyFieldMultiListFilter(MultiSelectRelatedOnlyFilter):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.title = self.__class__.__dict__['title']
@@ -64,7 +65,8 @@ def field_choices(self, field, request, model_admin) -> List[Tuple[str, str]]:
 
 
 def create_related_filter(title):
-    return type('_RelatedFilter', (RelatedOnlyFieldListFilter,), {'title': title})
+    return type('_RelatedFilter', (RelatedOnlyFieldMultiListFilter,), {'title': title})
+
 
 
 @admin.register(Trigger)