diff --git a/docs/api.md b/docs/api.md
index c91ff4c22..52c1e03a6 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -23,7 +23,6 @@ import squidpy as sq
     gr.spatial_neighbors_radius
     gr.spatial_neighbors_delaunay
     gr.spatial_neighbors_grid
-    gr.GraphMatrixT
     gr.SpatialNeighborsResult
     gr.mask_graph
     gr.nhood_enrichment
@@ -129,7 +128,6 @@ See the {doc}`extensibility guide </extensibility>` for how to implement a custo
 
     gr.neighbors.GraphBuilder
     gr.neighbors.GraphBuilderCSR
-    gr.neighbors.GraphMatrixT
     gr.neighbors.GraphPostprocessor
     gr.neighbors.DistanceIntervalPostprocessor
     gr.neighbors.PercentilePostprocessor
diff --git a/src/squidpy/gr/__init__.py b/src/squidpy/gr/__init__.py
index 6216159d3..fce615b66 100644
--- a/src/squidpy/gr/__init__.py
+++ b/src/squidpy/gr/__init__.py
@@ -24,10 +24,8 @@
 from squidpy.gr._ppatterns import co_occurrence, spatial_autocorr
 from squidpy.gr._ripley import ripley
 from squidpy.gr._sepal import sepal
-from squidpy.gr.neighbors import GraphMatrixT
 
 __all__ = [
-    "GraphMatrixT",
     "SpatialNeighborsResult",
     "NhoodEnrichmentResult",
     "neighbors",
diff --git a/src/squidpy/gr/neighbors.py b/src/squidpy/gr/neighbors.py
index 5a2bb7514..96dbee495 100644
--- a/src/squidpy/gr/neighbors.py
+++ b/src/squidpy/gr/neighbors.py
@@ -9,7 +9,7 @@
 from abc import ABC, abstractmethod
 from collections.abc import Callable, Sequence
 from dataclasses import dataclass
-from typing import Any, TypeVar, cast
+from typing import Any, cast
 
 import numpy as np
 from fast_array_utils import stats as fau_stats
@@ -31,7 +31,6 @@
 from squidpy._validators import assert_positive
 
 __all__ = [
-    "GraphMatrixT",
     "GraphBuilder",
     "GraphBuilderCSR",
     "GraphPostprocessor",
@@ -45,10 +44,9 @@
 ]
 
 
-# Kept module-level (not folded into GraphBuilder's params): types the public
-# `GraphPostprocessor` alias and is itself a public `squidpy.gr` export.
-GraphMatrixT = TypeVar("GraphMatrixT")
-GraphPostprocessor = Callable[[GraphMatrixT, GraphMatrixT], tuple[GraphMatrixT, GraphMatrixT]]
+# Public PEP 695 type alias for graph postprocessors. The type parameter is
+# scoped to the alias itself, so no module-level `TypeVar` is needed.
+type GraphPostprocessor[GraphMatrixT] = Callable[[GraphMatrixT, GraphMatrixT], tuple[GraphMatrixT, GraphMatrixT]]
 
 
 class GraphBuilder[CoordT, GraphMatrixT](ABC):