diff --git a/src/sentry/api/endpoints/project_rule_details.py b/src/sentry/api/endpoints/project_rule_details.py
index 0228abdc31b058..5a1bec67304dc8 100644
--- a/src/sentry/api/endpoints/project_rule_details.py
+++ b/src/sentry/api/endpoints/project_rule_details.py
@@ -245,6 +245,7 @@ def put(self, request: Request, project, rule) -> Response:
                 "name": data["name"],
                 "environment": data.get("environment"),
                 "project": project,
+                "project_id": project.id,
                 "action_match": data["actionMatch"],
                 "filter_match": data.get("filterMatch"),
                 "conditions": conditions,
diff --git a/src/sentry/api/endpoints/project_rules.py b/src/sentry/api/endpoints/project_rules.py
index 37aa667cf3740b..a3daa57aff189e 100644
--- a/src/sentry/api/endpoints/project_rules.py
+++ b/src/sentry/api/endpoints/project_rules.py
@@ -800,6 +800,7 @@ def post(self, request: Request, project) -> Response:
             "name": data["name"],
             "environment": data.get("environment"),
             "project": project,
+            "project_id": project.id,
             "action_match": data["actionMatch"],
             "filter_match": data.get("filterMatch"),
             "conditions": conditions,
diff --git a/src/sentry/integrations/slack/tasks/find_channel_id_for_rule.py b/src/sentry/integrations/slack/tasks/find_channel_id_for_rule.py
index 5c5effb2df8692..900bb7ff100587 100644
--- a/src/sentry/integrations/slack/tasks/find_channel_id_for_rule.py
+++ b/src/sentry/integrations/slack/tasks/find_channel_id_for_rule.py
@@ -32,20 +32,23 @@
     ),
 )
 def find_channel_id_for_rule(
-    project: Project,
+    project: Project | None,
     actions: Sequence[dict[str, Any]],
     uuid: str,
     rule_id: int | None = None,
     user_id: int | None = None,
+    project_id: int | None = None,
     **kwargs: Any,
 ) -> None:
     redis_rule_status = RedisRuleStatus(uuid)
 
-    try:
-        project = Project.objects.get(id=project.id)
-    except Project.DoesNotExist:
-        redis_rule_status.set_value("failed")
-        return
+    if not project and project_id:
+        try:
+            project = Project.objects.get_from_cache(id=project_id)
+        except Project.DoesNotExist:
+            redis_rule_status.set_value("failed")
+            return
+    assert project, "find_channel_id_for_rule requires a project or project_id"
 
     organization = project.organization
     integration_id: int | None = None
diff --git a/tests/sentry/api/endpoints/test_project_rules.py b/tests/sentry/api/endpoints/test_project_rules.py
index aa35c9b6bcd6d9..eaec8441b4a53f 100644
--- a/tests/sentry/api/endpoints/test_project_rules.py
+++ b/tests/sentry/api/endpoints/test_project_rules.py
@@ -727,6 +727,7 @@ def test_kicks_off_slack_async_job(
         payload["actions"][0].pop("name")
         kwargs = {
             "name": payload["name"],
+            "project_id": self.project.id,
             "environment": payload.get("environment"),
             "action_match": payload["actionMatch"],
             "filter_match": payload.get("filterMatch"),
diff --git a/tests/sentry/integrations/slack/tasks/test_tasks.py b/tests/sentry/integrations/slack/tasks/test_tasks.py
index c59ac49a58a41b..f4201cfca3e3d4 100644
--- a/tests/sentry/integrations/slack/tasks/test_tasks.py
+++ b/tests/sentry/integrations/slack/tasks/test_tasks.py
@@ -79,6 +79,52 @@ def test_task_new_rule(self, mock_set_value):
             "name": "New Rule",
             "environment": None,
             "project": self.project,
+            "project_id": self.project.id,
+            "action_match": "all",
+            "filter_match": "all",
+            "conditions": [
+                {"id": "sentry.rules.conditions.first_seen_event.FirstSeenEventCondition"}
+            ],
+            "actions": [
+                {
+                    "channel": "#my-channel",
+                    "id": "sentry.integrations.slack.notify_action.SlackNotifyServiceAction",
+                    "tags": "",
+                    "workspace": self.integration.id,
+                }
+            ],
+            "frequency": 5,
+            "uuid": self.uuid,
+            "user_id": self.user.id,
+        }
+
+        with self.tasks():
+            find_channel_id_for_rule(**data)
+
+        rule = Rule.objects.exclude(label__in=[DEFAULT_RULE_LABEL]).get(project_id=self.project.id)
+        mock_set_value.assert_called_with("success", rule.id)
+        assert rule.label == "New Rule"
+        # check that the channel_id got added
+        assert rule.data["actions"] == [
+            {
+                "channel": "#my-channel",
+                "channel_id": "chan-id",
+                "id": "sentry.integrations.slack.notify_action.SlackNotifyServiceAction",
+                "tags": "",
+                "workspace": self.integration.id,
+            }
+        ]
+        assert rule.created_by_id == self.user.id
+
+    @responses.activate
+    @patch.object(RedisRuleStatus, "set_value", return_value=None)
+    def test_task_new_rule_project_id(self, mock_set_value):
+        # Task should work if project_id is passed instead of project
+        data = {
+            "name": "New Rule",
+            "environment": None,
+            "project": None,
+            "project_id": self.project.id,
             "action_match": "all",
             "filter_match": "all",
             "conditions": [
@@ -128,6 +174,7 @@ def test_task_existing_rule(self, mock_set_value):
             "name": "Test Rule",
             "environment": None,
             "project": self.project,
+            "project_id": self.project.id,
             "action_match": "all",
             "filter_match": "all",
             "conditions": [condition_data],