diff --git a/migrations_lockfile.txt b/migrations_lockfile.txt
index 856cd6648d5967..bcb627a6cd45e4 100644
--- a/migrations_lockfile.txt
+++ b/migrations_lockfile.txt
@@ -6,5 +6,5 @@ To resolve this, rebase against latest master and regenerate your migration. Thi
 will then be regenerated, and you should be able to merge without conflicts.
 
 nodestore: 0002_nodestore_no_dictfield
-sentry: 0417_backfill_groupedmessage_substatus
+sentry: 0418_add_actor_constraints
 social_auth: 0001_initial
diff --git a/src/sentry/migrations/0418_add_actor_constraints.py b/src/sentry/migrations/0418_add_actor_constraints.py
new file mode 100644
index 00000000000000..82ccdfabfe794f
--- /dev/null
+++ b/src/sentry/migrations/0418_add_actor_constraints.py
@@ -0,0 +1,65 @@
+# Generated by Django 2.2.28 on 2023-01-31 20:37
+
+from django.db import migrations
+
+from sentry.new_migrations.migrations import CheckedMigration
+
+
+class Migration(CheckedMigration):
+    # This flag is used to mark that a migration shouldn't be automatically run in production. For
+    # the most part, this should only be used for operations where it's safe to run the migration
+    # after your code has deployed. So this should not be used for most operations that alter the
+    # schema of a table.
+    # Here are some things that make sense to mark as dangerous:
+    # - Large data migrations. Typically we want these to be run manually by ops so that they can
+    #   be monitored and not block the deploy for a long period of time while they run.
+    # - Adding indexes to large tables. Since this can take a long time, we'd generally prefer to
+    #   have ops run this and not block the deploy. Note that while adding an index is a schema
+    #   change, it's completely safe to run the operation after the code has deployed.
+    is_dangerous = True
+
+    dependencies = [
+        ("sentry", "0417_backfill_groupedmessage_substatus"),
+    ]
+
+    operations = (
+        [
+            migrations.RunSQL(
+                sql=line,
+                reverse_sql="",
+                hints={"tables": ["sentry_actor"]},
+            )
+            for line in """
+ALTER TABLE "sentry_actor" DROP CONSTRAINT IF EXISTS "sentry_actor_team_id_6ca8eba5_fk_sentry_team_id";
+ALTER TABLE "sentry_actor" DROP CONSTRAINT IF EXISTS "sentry_actor_team_id_6ca8eba5_uniq";
+DROP INDEX CONCURRENTLY IF EXISTS "sentry_actor_team_id_6ca8eba5";
+DROP INDEX CONCURRENTLY IF EXISTS "sentry_actor_team_id_6ca8eba5_uniq";
+
+CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS "sentry_actor_team_id_6ca8eba5_uniq" ON "sentry_actor" ("team_id");
+ALTER TABLE "sentry_actor" ADD CONSTRAINT "sentry_actor_team_id_6ca8eba5_fk_sentry_team_id" FOREIGN KEY ("team_id") REFERENCES "sentry_team" ("id") DEFERRABLE INITIALLY DEFERRED NOT VALID;
+ALTER TABLE "sentry_actor" VALIDATE CONSTRAINT "sentry_actor_team_id_6ca8eba5_fk_sentry_team_id";
+
+ALTER TABLE "sentry_actor" DROP CONSTRAINT IF EXISTS "sentry_actor_user_id_c832ff63_uniq";
+DROP INDEX CONCURRENTLY IF EXISTS "sentry_actor_user_id_c832ff63";
+DROP INDEX CONCURRENTLY IF EXISTS "sentry_actor_user_id_c832ff63_uniq";
+CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS "sentry_actor_user_id_c832ff63_uniq" ON "sentry_actor" ("user_id");
+        """.splitlines()
+            if line.strip()
+        ]
+        + [
+            migrations.RunSQL(
+                sql="SELECT 1",
+                reverse_sql="""
+ALTER TABLE "sentry_actor" ADD CONSTRAINT "sentry_actor_team_id_6ca8eba5_uniq" UNIQUE USING INDEX "sentry_actor_team_id_6ca8eba5_uniq";
+            """,
+                hints={"tables": ["sentry_actor"]},
+            ),
+            migrations.RunSQL(
+                sql="SELECT 1",
+                reverse_sql="""
+ALTER TABLE "sentry_actor" ADD CONSTRAINT "sentry_actor_user_id_c832ff63_uniq" UNIQUE USING INDEX "sentry_actor_user_id_c832ff63_uniq";
+            """,
+                hints={"tables": ["sentry_actor"]},
+            ),
+        ]
+    )
diff --git a/src/sentry/models/integrations/pagerduty_service.py b/src/sentry/models/integrations/pagerduty_service.py
index 3b98346142286d..0cc7d747f8a5d7 100644
--- a/src/sentry/models/integrations/pagerduty_service.py
+++ b/src/sentry/models/integrations/pagerduty_service.py
@@ -13,7 +13,7 @@
 
 
 @region_silo_only_model
-class PagerDutyService(DefaultFieldsModel, OrganizationIntegrityBackfillMixin):
+class PagerDutyService(OrganizationIntegrityBackfillMixin, DefaultFieldsModel):
     __include_in_export__ = False
 
     organization_integration = FlexibleForeignKey("sentry.OrganizationIntegration")
diff --git a/src/sentry/models/integrations/repository_project_path_config.py b/src/sentry/models/integrations/repository_project_path_config.py
index ff80964698ec49..be451fbb862607 100644
--- a/src/sentry/models/integrations/repository_project_path_config.py
+++ b/src/sentry/models/integrations/repository_project_path_config.py
@@ -13,7 +13,7 @@
 
 
 @region_silo_only_model
-class RepositoryProjectPathConfig(DefaultFieldsModel, OrganizationIntegrityBackfillMixin):
+class RepositoryProjectPathConfig(OrganizationIntegrityBackfillMixin, DefaultFieldsModel):
     __include_in_export__ = False
 
     repository = FlexibleForeignKey("sentry.Repository")