diff --git a/python/cudf_polars/cudf_polars/dsl/expressions/boolean.py b/python/cudf_polars/cudf_polars/dsl/expressions/boolean.py
index c309c6f9db3..483ea022b1d 100644
--- a/python/cudf_polars/cudf_polars/dsl/expressions/boolean.py
+++ b/python/cudf_polars/cudf_polars/dsl/expressions/boolean.py
@@ -374,8 +374,12 @@ def do_evaluate(
         elif self.name is BooleanFunction.Name.Not:
             (column,) = columns
             return Column(
-                plc.unary.unary_operation(
-                    column.obj, plc.unary.UnaryOperator.NOT, stream=df.stream
+                plc.unary.cast(
+                    plc.unary.unary_operation(
+                        column.obj, plc.unary.UnaryOperator.NOT, stream=df.stream
+                    ),
+                    self.dtype.plc_type,
+                    stream=df.stream,
                 ),
                 dtype=self.dtype,
             )
diff --git a/python/cudf_polars/tests/test_select.py b/python/cudf_polars/tests/test_select.py
index 10fcf9f660d..d01e3790047 100644
--- a/python/cudf_polars/tests/test_select.py
+++ b/python/cudf_polars/tests/test_select.py
@@ -68,6 +68,18 @@ def test_select_reduce():
     assert_gpu_result_equal(query)
 
 
+@pytest.mark.xfail(
+    reason=(
+        "Probably won't be fixed until 1.35.1 "
+        "https://github.com/pola-rs/polars/issues/24964"
+    )
+)
+def test_select_reduce_unary_not():
+    ldf = pl.LazyFrame({"c0": [1]})
+    query = ldf.select((~(pl.lit(1))).min().alias("literal"))
+    assert_gpu_result_equal(query)
+
+
 def test_select_with_cse_no_agg():
     df = pl.LazyFrame({"a": [1, 2, 3]})
     expr = pl.col("a") + pl.col("a")