diff --git a/setup.py b/setup.py
index 639118a80d..4f26e3bd76 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@
         "rich[jupyter]",
         "ruamel.yaml",
         "setuptools; python_version>='3.12'",
-        "sqlglot[rs]~=26.6.0",
+        "sqlglot[rs]~=26.8.0",
         "tenacity",
         "time-machine",
     ],
diff --git a/sqlmesh/core/model/definition.py b/sqlmesh/core/model/definition.py
index 18d8e9214c..948e23edaf 100644
--- a/sqlmesh/core/model/definition.py
+++ b/sqlmesh/core/model/definition.py
@@ -1428,7 +1428,6 @@ def is_breaking_change(self, previous: Model) -> t.Optional[bool]:
                 this_query,
                 matchings=[(previous_query, this_query)],
                 delta_only=True,
-                copy=False,
                 dialect=self.dialect if self.dialect == previous.dialect else None,
             )
         inserted_expressions = {e.expression for e in edits if isinstance(e, Insert)}
diff --git a/tests/core/test_macros.py b/tests/core/test_macros.py
index 1258bf427d..e05b51e6e1 100644
--- a/tests/core/test_macros.py
+++ b/tests/core/test_macros.py
@@ -921,7 +921,7 @@ def test_date_spine(assert_exp_eq, dialect, date_part):
                     CAST('2022-01-01' AS DATE),
                     CAST('2024-12-31' AS DATE),
                     INTERVAL '{interval}'
-                ) AS value
+                ) AS _t(value)
         ) AS _exploded(date_{date_part})
         """
     elif dialect == "spark":