diff --git a/pyproject.toml b/pyproject.toml
index e6fd05167..740b0ebea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -117,6 +117,7 @@ ignore = [
   "E221", # Multiple spaces before operator
   "E226", # Missing whitespace around arithmetic operator
   "E241", # Multiple spaces after ','
+  "PYI026", # flake8-pyi: typing.TypeAlias added in Python 3.10
   "PYI034", # flake8-pyi: typing.Self added in Python 3.11
 ]
 
diff --git a/src/PIL/_imagingcms.pyi b/src/PIL/_imagingcms.pyi
index 9cfd9d191..723f80481 100644
--- a/src/PIL/_imagingcms.pyi
+++ b/src/PIL/_imagingcms.pyi
@@ -4,21 +4,20 @@ from typing import Literal, TypedDict
 
 littlecms_version: str
 
-_tuple_3f = tuple[float, float, float]
-_tuple_2x3f = tuple[_tuple_3f, _tuple_3f]
-_tuple_3x3f = tuple[_tuple_3f, _tuple_3f, _tuple_3f]
-_tuple_2x3x3f = tuple[_tuple_3x3f, _tuple_3x3f]
+_Tuple3f = tuple[float, float, float]
+_Tuple2x3f = tuple[_Tuple3f, _Tuple3f]
+_Tuple3x3f = tuple[_Tuple3f, _Tuple3f, _Tuple3f]
 
 class _IccMeasurementCondition(TypedDict):
     observer: int
-    backing: _tuple_3f
+    backing: _Tuple3f
     geo: str
     flare: float
     illuminant_type: str
 
 class _IccViewingCondition(TypedDict):
-    illuminant: _tuple_3f
-    surround: _tuple_3f
+    illuminant: _Tuple3f
+    surround: _Tuple3f
     illuminant_type: str
 
 class CmsProfile:
@@ -71,29 +70,29 @@ class CmsProfile:
     @property
     def saturation_rendering_intent_gamut(self) -> str | None: ...
     @property
-    def red_colorant(self) -> _tuple_2x3f | None: ...
+    def red_colorant(self) -> _Tuple2x3f | None: ...
     @property
-    def green_colorant(self) -> _tuple_2x3f | None: ...
+    def green_colorant(self) -> _Tuple2x3f | None: ...
     @property
-    def blue_colorant(self) -> _tuple_2x3f | None: ...
+    def blue_colorant(self) -> _Tuple2x3f | None: ...
     @property
-    def red_primary(self) -> _tuple_2x3f | None: ...
+    def red_primary(self) -> _Tuple2x3f | None: ...
     @property
-    def green_primary(self) -> _tuple_2x3f | None: ...
+    def green_primary(self) -> _Tuple2x3f | None: ...
     @property
-    def blue_primary(self) -> _tuple_2x3f | None: ...
+    def blue_primary(self) -> _Tuple2x3f | None: ...
     @property
     def media_white_point_temperature(self) -> float | None: ...
     @property
-    def media_white_point(self) -> _tuple_2x3f | None: ...
+    def media_white_point(self) -> _Tuple2x3f | None: ...
     @property
-    def media_black_point(self) -> _tuple_2x3f | None: ...
+    def media_black_point(self) -> _Tuple2x3f | None: ...
     @property
-    def luminance(self) -> _tuple_2x3f | None: ...
+    def luminance(self) -> _Tuple2x3f | None: ...
     @property
-    def chromatic_adaptation(self) -> _tuple_2x3x3f | None: ...
+    def chromatic_adaptation(self) -> tuple[_Tuple3x3f, _Tuple3x3f] | None: ...
     @property
-    def chromaticity(self) -> _tuple_3x3f | None: ...
+    def chromaticity(self) -> _Tuple3x3f | None: ...
     @property
     def colorant_table(self) -> list[str] | None: ...
     @property