diff --git a/superset/db_engine_specs/sqlite.py b/superset/db_engine_specs/sqlite.py
index b82b498c1..3dfe647e3 100644
--- a/superset/db_engine_specs/sqlite.py
+++ b/superset/db_engine_specs/sqlite.py
@@ -110,7 +110,7 @@ class SqliteEngineSpec(BaseEngineSpec):
     ) -> Optional[str]:
         tt = target_type.upper()
         if tt in (utils.TemporalType.TEXT, utils.TemporalType.DATETIME):
-            return f"""'{dttm.isoformat(sep=" ", timespec="microseconds")}'"""
+            return f"""'{dttm.isoformat(sep=" ", timespec="seconds")}'"""
         return None
 
     @classmethod
diff --git a/tests/unit_tests/db_engine_specs/test_sqlite.py b/tests/unit_tests/db_engine_specs/test_sqlite.py
index 576f4ef9e..03470173d 100644
--- a/tests/unit_tests/db_engine_specs/test_sqlite.py
+++ b/tests/unit_tests/db_engine_specs/test_sqlite.py
@@ -27,13 +27,13 @@ from tests.unit_tests.fixtures.common import dttm
 def test_convert_dttm(dttm: datetime) -> None:
     from superset.db_engine_specs.sqlite import SqliteEngineSpec
 
-    assert SqliteEngineSpec.convert_dttm("TEXT", dttm) == "'2019-01-02 03:04:05.678900'"
+    assert SqliteEngineSpec.convert_dttm("TEXT", dttm) == "'2019-01-02 03:04:05'"
 
 
 def test_convert_dttm_lower(dttm: datetime) -> None:
     from superset.db_engine_specs.sqlite import SqliteEngineSpec
 
-    assert SqliteEngineSpec.convert_dttm("text", dttm) == "'2019-01-02 03:04:05.678900'"
+    assert SqliteEngineSpec.convert_dttm("text", dttm) == "'2019-01-02 03:04:05'"
 
 
 def test_convert_dttm_invalid_type(dttm: datetime) -> None: