diff --git a/singer_sdk/sinks/core.py b/singer_sdk/sinks/core.py
index 7d9d24a3c..dcac2bee4 100644
--- a/singer_sdk/sinks/core.py
+++ b/singer_sdk/sinks/core.py
@@ -456,7 +456,7 @@ def _add_sdc_metadata_to_record(
             or datetime.datetime.now(tz=datetime.timezone.utc)
         ).isoformat()
         record["_sdc_deleted_at"] = record.get("_sdc_deleted_at")
-        record["_sdc_sequence"] = int(round(time.time() * 1000))
+        record["_sdc_sequence"] = round(time.time() * 1000)
         record["_sdc_table_version"] = message.get("version")
         record["_sdc_sync_started_at"] = self.sync_started_at
 
diff --git a/tests/samples/conftest.py b/tests/samples/conftest.py
index 719f2e20c..1202dc688 100644
--- a/tests/samples/conftest.py
+++ b/tests/samples/conftest.py
@@ -19,7 +19,7 @@ def csv_config(outdir: str) -> dict:
 
 
 @pytest.fixture
-def _sqlite_sample_db(sqlite_connector):
+def sqlite_sample_db(sqlite_connector: SQLiteConnector):
     """Return a path to a newly constructed sample DB."""
     with sqlite_connector._connect() as conn, conn.begin():
         for t in range(3):