diff --git a/.ci/requirements-mypy.txt b/.ci/requirements-mypy.txt
index c84a3533b..cd1b1a1a1 100644
--- a/.ci/requirements-mypy.txt
+++ b/.ci/requirements-mypy.txt
@@ -1,4 +1,4 @@
-mypy==1.13.0
+mypy==1.14.0
 IceSpringPySideStubs-PyQt6
 IceSpringPySideStubs-PySide6
 ipython
diff --git a/Tests/test_color_lut.py b/Tests/test_color_lut.py
index 36ab187f2..baa899df5 100644
--- a/Tests/test_color_lut.py
+++ b/Tests/test_color_lut.py
@@ -388,10 +388,12 @@ class TestColorLut3DFilter:
 
         table = numpy.ones((7 * 6 * 5, 3), dtype=numpy.float16)
         lut = ImageFilter.Color3DLUT((5, 6, 7), table)
+        assert isinstance(lut.table, numpy.ndarray)
         assert lut.table.shape == (table.size,)
 
         table = numpy.ones((7 * 6 * 5 * 3), dtype=numpy.float16)
         lut = ImageFilter.Color3DLUT((5, 6, 7), table)
+        assert isinstance(lut.table, numpy.ndarray)
         assert lut.table.shape == (table.size,)
 
         # Check application
diff --git a/src/PIL/ImageFilter.py b/src/PIL/ImageFilter.py
index 8b0974b2c..b350e56f4 100644
--- a/src/PIL/ImageFilter.py
+++ b/src/PIL/ImageFilter.py
@@ -553,7 +553,7 @@ class Color3DLUT(MultibandFilter):
         ch_out = channels or ch_in
         size_1d, size_2d, size_3d = self.size
 
-        table = [0] * (size_1d * size_2d * size_3d * ch_out)
+        table: list[float] = [0] * (size_1d * size_2d * size_3d * ch_out)
         idx_in = 0
         idx_out = 0
         for b in range(size_3d):