diff --git a/bin/mock-replay b/bin/mock-replay
index 472614a8dfb0d6..774e2fddf1e9d8 100755
--- a/bin/mock-replay
+++ b/bin/mock-replay
@@ -77,7 +77,7 @@ def create_recording(replay_id, project_id, timestamp):
         store_replay_segments(replay_id, project_id, segment_id, segment)
 
 
-def store_replay_segments(replay_id: str, project_id: str, segment_id: int, segment):
+def store_replay_segments(replay_id: str, project_id: int, segment_id: int, segment) -> None:
     f = File.objects.create(name="rr:{segment_id}", type="replay.recording")
     f.putfile(BytesIO(compress(dumps_htmlsafe(segment).encode())))
     ReplayRecordingSegment.objects.create(
diff --git a/src/sentry/replays/testutils.py b/src/sentry/replays/testutils.py
index 2d594348875093..1bb818fa58d721 100644
--- a/src/sentry/replays/testutils.py
+++ b/src/sentry/replays/testutils.py
@@ -71,7 +71,7 @@ def assert_expected_response(response: dict[str, Any], expected_response: dict[s
 
 
 def mock_expected_response(
-    project_id: str,
+    project_id: int,
     replay_id: str,
     started_at: datetime.datetime,
     finished_at: datetime.datetime,
@@ -222,7 +222,7 @@ def mock_replay(
 
 def mock_replay_click(
     timestamp: datetime.datetime,
-    project_id: str,
+    project_id: int,
     replay_id: str,
     **kwargs: Any,
 ) -> dict[str, Any]:
@@ -266,7 +266,7 @@ def mock_replay_click(
 
 def mock_replay_viewed(
     timestamp: float,
-    project_id: str,
+    project_id: int,
     replay_id: str,
     viewed_by_id: int,
     retention_days: int = 30,
diff --git a/src/sentry/testutils/cases.py b/src/sentry/testutils/cases.py
index 0e49da002b59e3..5e6765c92dd85f 100644
--- a/src/sentry/testutils/cases.py
+++ b/src/sentry/testutils/cases.py
@@ -2460,10 +2460,10 @@ def store_replays(self, replays):
     def store_replay_segments(
         self,
         replay_id: str,
-        project_id: str,
+        project_id: int,
         segment_id: int,
         segment,
-    ):
+    ) -> None:
         f = File.objects.create(name="rr:{segment_id}", type="replay.recording")
         f.putfile(BytesIO(compress(dumps_htmlsafe(segment).encode())))
         ReplayRecordingSegment.objects.create(
diff --git a/src/sentry/testutils/fixtures.py b/src/sentry/testutils/fixtures.py
index 949cc56a52ea1e..f473989bc78ac2 100644
--- a/src/sentry/testutils/fixtures.py
+++ b/src/sentry/testutils/fixtures.py
@@ -160,7 +160,7 @@ def create_environment(self, project=None, **kwargs):
             project = self.project
         return Factories.create_environment(project=project, **kwargs)
 
-    def create_project(self, **kwargs):
+    def create_project(self, **kwargs) -> Project:
         if "teams" not in kwargs:
             kwargs["teams"] = [self.team]
         return Factories.create_project(**kwargs)
diff --git a/src/sentry/tsdb/base.py b/src/sentry/tsdb/base.py
index 8575613cd7daea..977908d615c37f 100644
--- a/src/sentry/tsdb/base.py
+++ b/src/sentry/tsdb/base.py
@@ -685,13 +685,13 @@ def get_frequency_series(
     def get_frequency_totals(
         self,
         model: TSDBModel,
-        items: Mapping[str, Sequence[str]],
+        items: Mapping[TSDBKey, Sequence[TSDBItem]],
         start: datetime,
         end: datetime | None = None,
         rollup: int | None = None,
         environment_id: int | None = None,
         tenant_ids: dict[str, str | int] | None = None,
-    ) -> dict[str, dict[str, float]]:
+    ) -> dict[TSDBKey, dict[TSDBItem, float]]:
         """
         Retrieve the total frequency of known items in a table over time.
 
diff --git a/src/sentry/tsdb/dummy.py b/src/sentry/tsdb/dummy.py
index ff012c733a64f9..ed9b5d7209bb48 100644
--- a/src/sentry/tsdb/dummy.py
+++ b/src/sentry/tsdb/dummy.py
@@ -141,13 +141,14 @@ def get_frequency_series(
 
     def get_frequency_totals(
         self,
-        model,
-        items: Mapping[str, Sequence[str]],
-        start,
-        end=None,
-        rollup=None,
-        environment_id=None,
-    ):
+        model: TSDBModel,
+        items: Mapping[TSDBKey, Sequence[TSDBItem]],
+        start: datetime,
+        end: datetime | None = None,
+        rollup: int | None = None,
+        environment_id: int | None = None,
+        tenant_ids: dict[str, str | int] | None = None,
+    ) -> dict[TSDBKey, dict[TSDBItem, float]]:
         self.validate_arguments([model], [environment_id])
         results = {}
         for key, members in items.items():
diff --git a/src/sentry/tsdb/inmemory.py b/src/sentry/tsdb/inmemory.py
index f8dcb6b36683a5..dd2854c16000e6 100644
--- a/src/sentry/tsdb/inmemory.py
+++ b/src/sentry/tsdb/inmemory.py
@@ -310,13 +310,14 @@ def get_frequency_series(
 
     def get_frequency_totals(
         self,
-        model,
-        items: Mapping[str, Sequence[str]],
-        start,
-        end=None,
-        rollup=None,
-        environment_id=None,
-    ):
+        model: TSDBModel,
+        items: Mapping[TSDBKey, Sequence[TSDBItem]],
+        start: datetime,
+        end: datetime | None = None,
+        rollup: int | None = None,
+        environment_id: int | None = None,
+        tenant_ids: dict[str, str | int] | None = None,
+    ) -> dict[TSDBKey, dict[TSDBItem, float]]:
         self.validate_arguments([model], [environment_id])
 
         results = {}
diff --git a/src/sentry/tsdb/redis.py b/src/sentry/tsdb/redis.py
index 6a4474ac1ba355..7c9a692c960482 100644
--- a/src/sentry/tsdb/redis.py
+++ b/src/sentry/tsdb/redis.py
@@ -964,19 +964,19 @@ def get_frequency_series(
     def get_frequency_totals(
         self,
         model: TSDBModel,
-        items: Mapping[str, Sequence[str]],
+        items: Mapping[TSDBKey, Sequence[TSDBItem]],
         start: datetime,
         end: datetime | None = None,
         rollup: int | None = None,
         environment_id: int | None = None,
         tenant_ids: dict[str, str | int] | None = None,
-    ) -> dict[str, dict[str, float]]:
+    ) -> dict[TSDBKey, dict[TSDBItem, float]]:
         self.validate_arguments([model], [environment_id])
 
         if not self.enable_frequency_sketches:
             raise NotImplementedError("Frequency sketches are disabled.")
 
-        responses: dict[str, dict[str, float]] = {}
+        responses: dict[TSDBKey, dict[TSDBItem, float]] = {}
         frequency_series = self.get_frequency_series(
             model, items, start, end, rollup, environment_id
         )
diff --git a/src/sentry/tsdb/snuba.py b/src/sentry/tsdb/snuba.py
index d5af6c0c9a1ee7..5fe3bb838364fa 100644
--- a/src/sentry/tsdb/snuba.py
+++ b/src/sentry/tsdb/snuba.py
@@ -911,14 +911,14 @@ def get_frequency_series(
 
     def get_frequency_totals(
         self,
-        model,
-        items: Mapping[str, Sequence[str]],
-        start,
-        end=None,
-        rollup=None,
-        environment_id=None,
-        tenant_ids=None,
-    ):
+        model: TSDBModel,
+        items: Mapping[TSDBKey, Sequence[TSDBItem]],
+        start: datetime,
+        end: datetime | None = None,
+        rollup: int | None = None,
+        environment_id: int | None = None,
+        tenant_ids: dict[str, str | int] | None = None,
+    ) -> dict[TSDBKey, dict[TSDBItem, float]]:
         return self.get_data(
             model,
             items,
diff --git a/tests/sentry/api/endpoints/test_organization_release_details.py b/tests/sentry/api/endpoints/test_organization_release_details.py
index fd549dfc9fedeb..c3ebeaf2928695 100644
--- a/tests/sentry/api/endpoints/test_organization_release_details.py
+++ b/tests/sentry/api/endpoints/test_organization_release_details.py
@@ -173,7 +173,7 @@ def test_incorrect_sort_option_should_return_invalid_sort_response(self):
             "sentry-api-0-organization-release-details",
             kwargs={"organization_id_or_slug": self.organization.slug, "version": release.version},
         )
-        response = self.client.get(url, {"project": self.project1.id, "sort": "invalid_sort"})
+        response = self.client.get(url, {"project": str(self.project1.id), "sort": "invalid_sort"})
         assert response.status_code == 400
 
     def test_get_prev_and_next_release_to_current_release_on_date_sort(self):
@@ -329,7 +329,7 @@ def test_get_prev_and_next_release_to_current_release_on_date_sort_env_filter_ap
                 "version": release_3.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "environment": ["prod"]})
+        response = self.client.get(url, {"project": str(self.project1.id), "environment": ["prod"]})
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["nextReleaseVersion"] is None
         assert response.data["currentProjectMeta"]["prevReleaseVersion"] == "foobar@1.0.0"
@@ -384,7 +384,7 @@ def test_get_prev_and_next_release_to_current_release_on_date_sort_status_filter
                 "version": release_3.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "status": "archived"})
+        response = self.client.get(url, {"project": str(self.project1.id), "status": "archived"})
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["prevReleaseVersion"] is None
         assert response.data["currentProjectMeta"]["nextReleaseVersion"] is None
@@ -421,7 +421,7 @@ def test_get_prev_and_next_release_to_current_release_on_date_sort_query_filter_
                 "version": release_2.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "query": "foobar@1"})
+        response = self.client.get(url, {"project": str(self.project1.id), "query": "foobar@1"})
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["prevReleaseVersion"] == "foobar@1.0.0"
         assert response.data["currentProjectMeta"]["nextReleaseVersion"] is None
@@ -461,7 +461,9 @@ def test_get_prev_and_next_release_on_date_sort_does_not_apply_stats_period_filt
                 "version": release_1.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "summaryStatsPeriod": "24h"})
+        response = self.client.get(
+            url, {"project": str(self.project1.id), "summaryStatsPeriod": "24h"}
+        )
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["nextReleaseVersion"] == "foobar@2.0.0"
         assert response.data["currentProjectMeta"]["prevReleaseVersion"] == "foobar@3.0.0"
@@ -581,7 +583,7 @@ def test_get_first_and_last_release_on_date_sort_env_filter_applied(self):
                 "version": release_3.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "environment": ["prod"]})
+        response = self.client.get(url, {"project": str(self.project1.id), "environment": ["prod"]})
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["firstReleaseVersion"] == "foobar@2.0.0"
         assert response.data["currentProjectMeta"]["lastReleaseVersion"] == "foobar@3.0.0"
@@ -607,7 +609,7 @@ def test_get_first_and_last_release_on_non_date_sort(self):
                 "version": release_1.version,
             },
         )
-        response = self.client.get(url, {"project": self.project1.id, "sort": "sessions"})
+        response = self.client.get(url, {"project": str(self.project1.id), "sort": "sessions"})
         assert response.status_code == 400
         assert response.data["detail"] == "invalid sort"
 
@@ -632,7 +634,7 @@ def test_get_first_and_last_release_when_project_has_no_releases(self):
             "sentry-api-0-organization-release-details",
             kwargs={"organization_id_or_slug": self.organization.slug, "version": release.version},
         )
-        response = self.client.get(url, {"project": self.project1.id, "environment": ["test"]})
+        response = self.client.get(url, {"project": str(self.project1.id), "environment": ["test"]})
         assert response.status_code == 200
         assert response.data["currentProjectMeta"]["firstReleaseVersion"] is None
         assert response.data["currentProjectMeta"]["lastReleaseVersion"] is None
diff --git a/tests/sentry/features/test_flagpole_context.py b/tests/sentry/features/test_flagpole_context.py
index c9abf21b644824..8f18888fedbf77 100644
--- a/tests/sentry/features/test_flagpole_context.py
+++ b/tests/sentry/features/test_flagpole_context.py
@@ -40,7 +40,7 @@ def test_with_invalid_organization(self):
             organization_context_transformer(SentryContextData(organization=1234))  # type: ignore[arg-type]
 
         with pytest.raises(InvalidContextDataException):
-            organization_context_transformer(SentryContextData(organization=self.create_project()))
+            organization_context_transformer(SentryContextData(organization=self.create_project()))  # type: ignore[arg-type]
 
     def test_with_valid_organization(self):
         org = self.create_organization(slug="foobar", name="Foo Bar")
diff --git a/tests/sentry/incidents/endpoints/test_organization_combined_rule_index_endpoint.py b/tests/sentry/incidents/endpoints/test_organization_combined_rule_index_endpoint.py
index 6fbeec0f4ef306..2efee8c827383b 100644
--- a/tests/sentry/incidents/endpoints/test_organization_combined_rule_index_endpoint.py
+++ b/tests/sentry/incidents/endpoints/test_organization_combined_rule_index_endpoint.py
@@ -64,7 +64,7 @@ def setup_project_and_rules(self):
             organization=self.org, teams=[self.team], name="Elephant"
         )
         self.projects = [self.project, self.project2]
-        self.project_ids = [self.project.id, self.project2.id]
+        self.project_ids = [str(self.project.id), str(self.project2.id)]
         self.alert_rule = self.create_alert_rule(
             name="alert rule",
             organization=self.org,
@@ -128,7 +128,12 @@ def test_limit_as_1_with_paging_sort_name(self):
         self.setup_project_and_rules()
         # Test Limit as 1, no cursor:
         with self.feature(["organizations:incidents", "organizations:performance-view"]):
-            request_data = {"per_page": "1", "project": self.project.id, "sort": "name", "asc": 1}
+            request_data = {
+                "per_page": "1",
+                "project": str(self.project.id),
+                "sort": "name",
+                "asc": "1",
+            }
             response = self.client.get(
                 path=self.combined_rules_url, data=request_data, content_type="application/json"
             )
@@ -145,9 +150,9 @@ def test_limit_as_1_with_paging_sort_name(self):
             request_data = {
                 "cursor": next_cursor,
                 "per_page": "1",
-                "project": self.project.id,
+                "project": str(self.project.id),
                 "sort": "name",
-                "asc": 1,
+                "asc": "1",
             }
             response = self.client.get(
                 path=self.combined_rules_url, data=request_data, content_type="application/json"
@@ -183,7 +188,12 @@ def test_limit_as_1_with_paging_sort_name_urlencode(self):
         # Test Limit as 1, no cursor:
         url = f"/api/0/organizations/{self.org.slug}/combined-rules/"
         with self.feature(["organizations:incidents", "organizations:performance-view"]):
-            request_data = {"per_page": "1", "project": self.project.id, "sort": "name", "asc": 1}
+            request_data = {
+                "per_page": "1",
+                "project": str(self.project.id),
+                "sort": "name",
+                "asc": "1",
+            }
             response = self.client.get(
                 path=url,
                 data=request_data,
@@ -202,9 +212,9 @@ def test_limit_as_1_with_paging_sort_name_urlencode(self):
             request_data = {
                 "cursor": next_cursor,
                 "per_page": "1",
-                "project": self.project.id,
+                "project": str(self.project.id),
                 "sort": "name",
-                "asc": 1,
+                "asc": "1",
             }
             response = self.client.get(path=url, data=request_data, content_type="application/json")
         assert response.status_code == 200
@@ -234,7 +244,7 @@ def test_limit_as_1_with_paging(self):
 
         # Test Limit as 1, next page of previous request:
         with self.feature(["organizations:incidents", "organizations:performance-view"]):
-            request_data = {"cursor": next_cursor, "per_page": "1", "project": self.project.id}
+            request_data = {"cursor": next_cursor, "per_page": "1", "project": str(self.project.id)}
             response = self.client.get(
                 path=self.combined_rules_url, data=request_data, content_type="application/json"
             )
@@ -561,7 +571,7 @@ def test_myteams_filter_superuser(self):
         with self.feature(["organizations:incidents", "organizations:performance-view"]):
             request_data = {
                 "per_page": "10",
-                "project": [another_project.id],
+                "project": [str(another_project.id)],
                 "team": ["myteams"],
             }
             response = self.client.get(
@@ -573,7 +583,7 @@ def test_myteams_filter_superuser(self):
         with self.feature(["organizations:incidents", "organizations:performance-view"]):
             request_data = {
                 "per_page": "10",
-                "project": [another_project.id],
+                "project": [str(another_project.id)],
                 "team": [another_org_team.id],
             }
             response = self.client.get(
diff --git a/tests/sentry/issues/test_escalating.py b/tests/sentry/issues/test_escalating.py
index b67d270a52904b..08d4a5febf046e 100644
--- a/tests/sentry/issues/test_escalating.py
+++ b/tests/sentry/issues/test_escalating.py
@@ -233,8 +233,8 @@ def test_query_different_orgs(self, mock_logger: MagicMock) -> None:
         org_b = self.create_organization()
         proj_b = self.create_project(organization=org_b)
 
-        event1 = self._create_events_for_group(project_id=proj_a, hours_ago=1)
-        event_proj_org_b_1 = self._create_events_for_group(project_id=proj_b, hours_ago=1)
+        event1 = self._create_events_for_group(project_id=proj_a.id, hours_ago=1)
+        event_proj_org_b_1 = self._create_events_for_group(project_id=proj_b.id, hours_ago=1)
 
         # Since proj_org_b is created
         assert query_groups_past_counts(Group.objects.all()) == [
diff --git a/tests/sentry/receivers/test_onboarding.py b/tests/sentry/receivers/test_onboarding.py
index bf7a7d809a3ca1..02c90d715e63b6 100644
--- a/tests/sentry/receivers/test_onboarding.py
+++ b/tests/sentry/receivers/test_onboarding.py
@@ -11,6 +11,7 @@
     OnboardingTaskStatus,
     OrganizationOnboardingTask,
 )
+from sentry.models.project import Project
 from sentry.models.rule import Rule
 from sentry.plugins.bases.issue import IssueTrackingPlugin
 from sentry.services.hybrid_cloud.organization import organization_service
@@ -684,8 +685,10 @@ def test_old_project_sending_minified_stack_trace_event(self, record_analytics):
             ]
         }
 
-        # project.flags.has_minified_stack_trace = False
-        assert not project.flags.has_minified_stack_trace
+        def _project_has_minified_stack_trace(p: Project) -> bool:
+            return p.flags.has_minified_stack_trace
+
+        assert not _project_has_minified_stack_trace(project)
 
         # Store event
         self.store_event(
@@ -695,8 +698,7 @@ def test_old_project_sending_minified_stack_trace_event(self, record_analytics):
 
         project.refresh_from_db()
 
-        # project.flags.has_minified_stack_trace = True
-        assert project.flags.has_minified_stack_trace
+        assert _project_has_minified_stack_trace(project)
 
         # The analytic's event "first_event_with_minified_stack_trace_for_project" shall not be sent
         count = 0
@@ -866,16 +868,17 @@ def test_old_project_sending_sourcemap_event(self, record_analytics):
             ]
         }
 
-        # project.flags.has_sourcemaps = False
-        assert not project.flags.has_sourcemaps
+        def _project_has_sourcemaps(p: Project) -> bool:
+            return project.flags.has_sourcemaps
+
+        assert not _project_has_sourcemaps(project)
 
         event = self.store_event(project_id=project.id, data=data)
         event_processed.send(project=project, event=event, sender=type(project))
 
         project.refresh_from_db()
 
-        # project.flags.has_sourcemaps = True
-        assert project.flags.has_sourcemaps
+        assert _project_has_sourcemaps(project)
 
         # The analytic's event "first_event_with_minified_stack_trace_for_project" shall not be sent
         count = 0
diff --git a/tests/sentry/release_health/test_tasks.py b/tests/sentry/release_health/test_tasks.py
index 65d7a097f48d0e..622258caf45283 100644
--- a/tests/sentry/release_health/test_tasks.py
+++ b/tests/sentry/release_health/test_tasks.py
@@ -152,8 +152,8 @@ def test_simple(self):
             },
         ]
         process_projects_with_sessions(test_data[0]["org_id"][0], test_data[0]["project_id"])
-        self.project1.refresh_from_db()
-        assert self.project1.flags.has_sessions
+        project1 = Project.objects.get(id=self.project1.id)
+        assert project1.flags.has_sessions
 
         assert not ReleaseProjectEnvironment.objects.filter(
             project_id=self.project1.id,
diff --git a/tests/sentry/tasks/test_weekly_reports.py b/tests/sentry/tasks/test_weekly_reports.py
index dda8075c3f19fd..104dfb3eb002bb 100644
--- a/tests/sentry/tasks/test_weekly_reports.py
+++ b/tests/sentry/tasks/test_weekly_reports.py
@@ -88,7 +88,7 @@ def test_integration(self):
             teams=[self.team],
             date_added=self.now - timedelta(days=90),
         )
-        member_set = set(project.teams.first().member_set.all())
+        member_set = set(project.teams.get().member_set.all())
         with self.options({"issues.group_attributes.send_kafka": True}):
             self.store_event(
                 data={
@@ -115,7 +115,7 @@ def test_with_empty_string_user_option(self):
             self.store_event(
                 data={"timestamp": iso_format(before_now(days=1))}, project_id=project.id
             )
-        member_set = set(project.teams.first().member_set.all())
+        member_set = set(project.teams.get().member_set.all())
         for member in member_set:
             # some users have an empty string value set for this key, presumably cleared.
             user_option_service.set_option(
diff --git a/tests/snuba/api/endpoints/test_discover_key_transactions.py b/tests/snuba/api/endpoints/test_discover_key_transactions.py
index eada5615b1edba..b2b08963b7a561 100644
--- a/tests/snuba/api/endpoints/test_discover_key_transactions.py
+++ b/tests/snuba/api/endpoints/test_discover_key_transactions.py
@@ -885,7 +885,7 @@ def test_get_key_transaction_list_pagination(self):
             response = self.client.get(
                 reverse("sentry-api-0-organization-key-transactions-list", args=[org.slug]),
                 data={
-                    "project": [project.id],
+                    "project": [str(project.id)],
                     "team": ["myteams"],
                 },
                 format="json",
@@ -906,7 +906,7 @@ def test_get_key_transaction_list_pagination(self):
             response = self.client.get(
                 reverse("sentry-api-0-organization-key-transactions-list", args=[org.slug]),
                 data={
-                    "project": [project.id],
+                    "project": [str(project.id)],
                     "team": ["myteams"],
                     "cursor": links["next"]["cursor"],
                 },
diff --git a/tests/snuba/api/endpoints/test_organization_events_facets.py b/tests/snuba/api/endpoints/test_organization_events_facets.py
index 07f022de323565..29eaf004ef9a38 100644
--- a/tests/snuba/api/endpoints/test_organization_events_facets.py
+++ b/tests/snuba/api/endpoints/test_organization_events_facets.py
@@ -711,7 +711,7 @@ def test_with_cursor_parameter(self):
         # Get the next page
         with self.feature(self.features):
             response = self.client.get(
-                self.url, format="json", data={"project": test_project.id, "cursor": "0:10:0"}
+                self.url, format="json", data={"project": str(test_project.id), "cursor": "0:10:0"}
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
@@ -784,7 +784,7 @@ def test_projects_data_are_injected_on_first_page_with_multiple_projects_selecte
             response = self.client.get(
                 self.url,
                 format="json",
-                data={"project": [test_project.id, test_project2.id], "cursor": "0:10:0"},
+                data={"project": [str(test_project.id), str(test_project2.id)], "cursor": "0:10:0"},
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
@@ -832,7 +832,7 @@ def test_multiple_pages_with_single_project(self):
             response = self.client.get(
                 self.url,
                 format="json",
-                data={"project": test_project.id, "cursor": links[1]["cursor"]},
+                data={"project": str(test_project.id), "cursor": links[1]["cursor"]},
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
@@ -847,7 +847,7 @@ def test_multiple_pages_with_single_project(self):
             response = self.client.get(
                 self.url,
                 format="json",
-                data={"project": test_project.id, "cursor": links[1]["cursor"]},
+                data={"project": str(test_project.id), "cursor": links[1]["cursor"]},
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
@@ -886,7 +886,10 @@ def test_multiple_pages_with_multiple_projects(self):
             response = self.client.get(
                 self.url,
                 format="json",
-                data={"project": [test_project.id, test_project2.id], "cursor": links[1]["cursor"]},
+                data={
+                    "project": [str(test_project.id), str(test_project2.id)],
+                    "cursor": links[1]["cursor"],
+                },
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
@@ -901,7 +904,10 @@ def test_multiple_pages_with_multiple_projects(self):
             response = self.client.get(
                 self.url,
                 format="json",
-                data={"project": [test_project.id, test_project2.id], "cursor": links[1]["cursor"]},
+                data={
+                    "project": [str(test_project.id), str(test_project2.id)],
+                    "cursor": links[1]["cursor"],
+                },
             )
             links = requests.utils.parse_header_links(
                 response.get("link", "").rstrip(">").replace(">,<", ",<")
diff --git a/tests/snuba/api/endpoints/test_organization_events_meta.py b/tests/snuba/api/endpoints/test_organization_events_meta.py
index bf3a1db3c0ab83..f869927d6738b5 100644
--- a/tests/snuba/api/endpoints/test_organization_events_meta.py
+++ b/tests/snuba/api/endpoints/test_organization_events_meta.py
@@ -368,7 +368,7 @@ def test_related_issues_transactions_from_different_projects(self):
         )
         response = self.client.get(
             url,
-            {"transaction": "/beth/sanchez", "project": project1.id},
+            {"transaction": "/beth/sanchez", "project": str(project1.id)},
             format="json",
         )
 
@@ -396,7 +396,7 @@ def test_related_issues_transactions_with_quotes(self):
         )
         response = self.client.get(
             url,
-            {"transaction": '/beth/"sanchez"', "project": project.id},
+            {"transaction": '/beth/"sanchez"', "project": str(project.id)},
             format="json",
         )
 
@@ -411,7 +411,7 @@ def test_related_issues_transactions_with_quotes(self):
         )
         response = self.client.get(
             url,
-            {"transaction": '/beth/\\"sanchez\\"', "project": project.id},
+            {"transaction": '/beth/\\"sanchez\\"', "project": str(project.id)},
             format="json",
         )
 
diff --git a/tests/snuba/api/endpoints/test_organization_events_stats.py b/tests/snuba/api/endpoints/test_organization_events_stats.py
index 4569411d76ddf2..1f0881969a0d4d 100644
--- a/tests/snuba/api/endpoints/test_organization_events_stats.py
+++ b/tests/snuba/api/endpoints/test_organization_events_stats.py
@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import uuid
 from datetime import timedelta
+from typing import Any, TypedDict
 from unittest import mock
 from uuid import uuid4
 
@@ -12,6 +15,7 @@
 
 from sentry.constants import MAX_TOP_EVENTS
 from sentry.issues.grouptype import ProfileFileIOGroupType
+from sentry.models.project import Project
 from sentry.models.transaction_threshold import ProjectTransactionThreshold, TransactionMetric
 from sentry.snuba.discover import OTHER_KEY
 from sentry.testutils.cases import APITestCase, ProfilesSnubaTestCase, SnubaTestCase
@@ -22,6 +26,12 @@
 pytestmark = pytest.mark.sentry_metrics
 
 
+class _EventDataDict(TypedDict):
+    data: dict[str, Any]
+    project: Project
+    count: int
+
+
 class OrganizationEventsStatsEndpointTest(APITestCase, SnubaTestCase, SearchIssueTestMixin):
     endpoint = "sentry-api-0-organization-events-stats"
 
@@ -1067,7 +1077,7 @@ def test_tag_with_conflicting_function_alias_simple(self):
         assert all([interval[1][0]["count"] == 0 for interval in response.data["data"]])
 
     def test_group_id_tag_simple(self):
-        event_data = {
+        event_data: _EventDataDict = {
             "data": {
                 "message": "poof",
                 "timestamp": iso_format(self.day_ago + timedelta(minutes=2)),
@@ -1120,7 +1130,7 @@ def setUp(self):
         transaction_data["start_timestamp"] = iso_format(self.day_ago + timedelta(minutes=2))
         transaction_data["timestamp"] = iso_format(self.day_ago + timedelta(minutes=4))
         transaction_data["tags"] = {"shared-tag": "yup"}
-        self.event_data = [
+        self.event_data: list[_EventDataDict] = [
             {
                 "data": {
                     "message": "poof",
@@ -1349,7 +1359,7 @@ def test_top_events_with_projects_other(self):
         assert [attrs[0]["count"] for _, attrs in data["Other"]["data"]] == [7, 6]
 
     def test_tag_with_conflicting_function_alias_simple(self):
-        event_data = {
+        event_data: _EventDataDict = {
             "data": {
                 "message": "poof",
                 "timestamp": iso_format(self.day_ago + timedelta(minutes=2)),
@@ -1396,7 +1406,7 @@ def test_tag_with_conflicting_function_alias_simple(self):
         reason="The response.data[Other] returns 15 locally and returns 16 or 15 remotely."
     )
     def test_tag_with_conflicting_function_alias_with_other_single_grouping(self):
-        event_data = [
+        event_data: list[_EventDataDict] = [
             {
                 "data": {
                     "message": "poof",
@@ -1444,7 +1454,7 @@ def test_tag_with_conflicting_function_alias_with_other_single_grouping(self):
             assert response.data["Other"]["data"][0][1] == [{"count": 16}]
 
     def test_tag_with_conflicting_function_alias_with_other_multiple_groupings(self):
-        event_data = [
+        event_data: list[_EventDataDict] = [
             {
                 "data": {
                     "message": "abc",
@@ -1492,7 +1502,7 @@ def test_tag_with_conflicting_function_alias_with_other_multiple_groupings(self)
             assert response.data["Other"]["data"][0][1] == [{"count": 25}]
 
     def test_group_id_tag_simple(self):
-        event_data = {
+        event_data: _EventDataDict = {
             "data": {
                 "message": "poof",
                 "timestamp": iso_format(self.day_ago + timedelta(minutes=2)),
@@ -2247,14 +2257,14 @@ def test_top_events_with_error_handled(self):
             )
 
         assert response.status_code == 200, response.content
-        data = response.data
+        res_data = response.data
 
-        assert len(data) == 2
+        assert len(res_data) == 2
 
-        results = data["1"]
+        results = res_data["1"]
         assert [attrs for time, attrs in results["data"]] == [[{"count": 20}], [{"count": 6}]]
 
-        results = data["0"]
+        results = res_data["0"]
         assert [attrs for time, attrs in results["data"]] == [[{"count": 1}], [{"count": 0}]]
 
     def test_top_events_with_aggregate_condition(self):