diff --git a/fakesnow/arrow.py b/fakesnow/arrow.py
index 696cf3b..bdca005 100644
--- a/fakesnow/arrow.py
+++ b/fakesnow/arrow.py
@@ -5,7 +5,7 @@
 import pyarrow as pa
 import pyarrow.compute as pc
 
-from fakesnow.types import ColumnInfo
+from fakesnow.rowtype import ColumnInfo
 
 
 def to_sf_schema(schema: pa.Schema, rowtype: list[ColumnInfo]) -> pa.Schema:
diff --git a/fakesnow/conn.py b/fakesnow/conn.py
index 199cc74..a96ac22 100644
--- a/fakesnow/conn.py
+++ b/fakesnow/conn.py
@@ -60,7 +60,7 @@ def __init__(
                 where upper(catalog_name) = '{self.database}'"""
             ).fetchone()
         ):
-            db_file = f"{self.db_path/self.database}.db" if self.db_path else ":memory:"
+            db_file = f"{self.db_path / self.database}.db" if self.db_path else ":memory:"
             duck_conn.execute(f"ATTACH DATABASE '{db_file}' AS {self.database}")
             duck_conn.execute(info_schema.creation_sql(self.database))
             duck_conn.execute(macros.creation_sql(self.database))
diff --git a/fakesnow/cursor.py b/fakesnow/cursor.py
index c7951b9..d4661e8 100644
--- a/fakesnow/cursor.py
+++ b/fakesnow/cursor.py
@@ -24,7 +24,7 @@
 import fakesnow.expr as expr
 import fakesnow.info_schema as info_schema
 import fakesnow.transforms as transforms
-from fakesnow.types import describe_as_result_metadata
+from fakesnow.rowtype import describe_as_result_metadata
 
 if TYPE_CHECKING:
     # don't require pandas at import time
diff --git a/fakesnow/info_schema.py b/fakesnow/info_schema.py
index 4f3bf73..d82a31a 100644
--- a/fakesnow/info_schema.py
+++ b/fakesnow/info_schema.py
@@ -146,7 +146,7 @@ def insert_table_comment_sql(catalog: str, schema: str, table: str, comment: str
 
 def insert_text_lengths_sql(catalog: str, schema: str, table: str, text_lengths: list[tuple[str, int]]) -> str:
     values = ", ".join(
-        f"('{catalog}', '{schema}', '{table}', '{col_name}', {size}, {min(size*4,16777216)})"
+        f"('{catalog}', '{schema}', '{table}', '{col_name}', {size}, {min(size * 4, 16777216)})"
         for (col_name, size) in text_lengths
     )
 
diff --git a/fakesnow/types.py b/fakesnow/rowtype.py
similarity index 100%
rename from fakesnow/types.py
rename to fakesnow/rowtype.py
diff --git a/fakesnow/server.py b/fakesnow/server.py
index 2be43bb..d40b8cf 100644
--- a/fakesnow/server.py
+++ b/fakesnow/server.py
@@ -17,7 +17,7 @@
 from fakesnow.arrow import to_ipc, to_sf
 from fakesnow.fakes import FakeSnowflakeConnection
 from fakesnow.instance import FakeSnow
-from fakesnow.types import describe_as_rowtype
+from fakesnow.rowtype import describe_as_rowtype
 
 shared_fs = FakeSnow()
 sessions: dict[str, FakeSnowflakeConnection] = {}
diff --git a/fakesnow/transforms.py b/fakesnow/transforms.py
index 17a894a..b952a50 100644
--- a/fakesnow/transforms.py
+++ b/fakesnow/transforms.py
@@ -133,7 +133,7 @@ def create_database(expression: exp.Expression, db_path: Path | None = None) ->
         ident = expression.find(exp.Identifier)
         assert ident, f"No identifier in {expression.sql}"
         db_name = ident.this
-        db_file = f"{db_path/db_name}.db" if db_path else ":memory:"
+        db_file = f"{db_path / db_name}.db" if db_path else ":memory:"
 
         if_not_exists = "IF NOT EXISTS " if expression.args.get("exists") else ""
 
diff --git a/fakesnow/transforms_merge.py b/fakesnow/transforms_merge.py
index abb7020..ca15798 100644
--- a/fakesnow/transforms_merge.py
+++ b/fakesnow/transforms_merge.py
@@ -83,9 +83,9 @@ def _create_merge_candidates(merge_expr: exp.Merge) -> exp.Expression:
     sql = f"""
     CREATE OR REPLACE TEMPORARY TABLE merge_candidates AS
     SELECT
-        {', '.join(sorted(values))},
+        {", ".join(sorted(values))},
         CASE
-            {' '.join(case_when_clauses)}
+            {" ".join(case_when_clauses)}
             ELSE NULL
         END AS MERGE_OP
     FROM {target_tbl}
@@ -191,12 +191,12 @@ def _counts(merge_expr: exp.Merge) -> exp.Expression:
             operations["inserted"].append(w_idx)
 
     count_statements = [
-        f"""COUNT_IF(merge_op in ({','.join(map(str, indices))})) as \"number of rows {op}\""""
+        f"""COUNT_IF(merge_op in ({",".join(map(str, indices))})) as \"number of rows {op}\""""
         for op, indices in operations.items()
         if indices
     ]
     sql = f"""
-    SELECT {', '.join(count_statements)}
+    SELECT {", ".join(count_statements)}
     FROM merge_candidates
     """
 
diff --git a/pyproject.toml b/pyproject.toml
index a206414..0deff54 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ dev = [
     "pyarrow-stubs==10.0.1.9",
     "pytest~=8.0",
     "pytest-asyncio",
-    "ruff~=0.8.1",
+    "ruff~=0.9.4",
     "twine~=6.0",
     "snowflake-sqlalchemy~=1.7.0",
 ]
diff --git a/tests/test_arrow.py b/tests/test_arrow.py
index 7ae28b9..bddd5c9 100644
--- a/tests/test_arrow.py
+++ b/tests/test_arrow.py
@@ -8,7 +8,7 @@
 import pytz
 
 from fakesnow.arrow import timestamp_to_sf_struct, to_ipc, to_sf_schema
-from fakesnow.types import ColumnInfo, describe_as_rowtype
+from fakesnow.rowtype import ColumnInfo, describe_as_rowtype
 
 
 def rowtype(types: list[str]) -> list[ColumnInfo]:
diff --git a/tests/test_patch.py b/tests/test_patch.py
index 3e8c493..5f22ac4 100644
--- a/tests/test_patch.py
+++ b/tests/test_patch.py
@@ -14,9 +14,9 @@ def test_patch_snowflake_connector_connect(_fakesnow_no_auto_create: None) -> No
 
 
 def test_patch_snowflake_connector_pandas_tools_write_pandas(_fakesnow_no_auto_create: None) -> None:
-    assert isinstance(
-        snowflake.connector.pandas_tools.write_pandas, MagicMock
-    ), "snowflake.connector.pandas_tools.write_pandas is not mocked"
+    assert isinstance(snowflake.connector.pandas_tools.write_pandas, MagicMock), (
+        "snowflake.connector.pandas_tools.write_pandas is not mocked"
+    )
 
 
 def test_patch_this_modules_connect() -> None: