diff --git a/pyproject.toml b/pyproject.toml
index b3ee3475..dfa73c8f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,11 +7,11 @@ name = "microsoft-python-type-stubs"
 version = "0"
 
 [dependency-groups]
-hygiene = ["ruff ==0.11.*"]
+hygiene = ["ruff ==0.14.*"]
 tests = [
     # Tools used for testing
     "docopt-ng",
-    "mypy ==1.16.*",
+    "mypy ==1.19.*",
     "pyright",
 
     # External type stubs and optional dependencies
@@ -55,15 +55,22 @@ target-version = "py39"
 extend-select = [
     "FA", # flake8-future-annotations
     "I", # isort
-    "PGH", # pygrep-hooks
     "PGH", # pygrep-hooks and blanket-noqa
-    "PIE790", # unnecessary-placeholder
+    "PIE", # flake8-pie and unnecessary-placeholder
     "PYI", # flake8-pyi
     "RUF", # Ruff-specific and unused-noqa
+    "TC", # flake8-type-checking
     "UP", # pyupgrade
     "W", # pycodestyle Warning
+    "YTT", # flake8-2020 (version_info misuses)
 ]
 ignore = [
+    # Not colored correctly in Pylance https://github.com/microsoft/pylance-release/issues/6942
+    "UP047",
+
+    # TODO: Investigate and fix or configure
+    "PYI051", # Request for autofix: https://github.com/astral-sh/ruff/issues/14185
+
     ###
     # Rules we don't want or don't agree with
     ###
@@ -77,9 +84,6 @@ ignore = [
     "PYI011",
     "PYI014",
     "PYI053",
-
-    # TODO: Investigate and fix or configure
-    "PYI051", # Request for autofix: https://github.com/astral-sh/ruff/issues/14185
 ]
 
 [tool.ruff.lint.per-file-ignores]
@@ -144,13 +148,12 @@ reportSelfClsParameterName = false
 reportUnsupportedDunderAll = "error"
 
 [tool.mypy]
+fixed_format_cache = true # Will be default in mypy 1.20
 strict = true
-check_untyped_defs = true # Strict check on all defs
 show_column_numbers = true
 # Not all imports in these stubs are gonna be typed
 # Don't infer symbols from untyped packages as Any
 follow_untyped_imports = true
-warn_unused_ignores = false # Change from pandas
 # Partial stubs are acceptable
 disallow_any_generics = false
 disallow_incomplete_defs = false
@@ -165,25 +168,32 @@ disable_error_code = [
     # as they are inherited from the implementation.
     "override",
     # TODO
-    "assignment", # 744 errors in 155 files
+    "assignment", # 688 errors in 155 files
 ]
 
 [[tool.mypy.overrides]]
-# follow_untyped_imports = true will cause stubtest to run mypy on the source
-# So disable it for partial stubs
 module = ["sympy.*"]
-follow_untyped_imports = false
-disable_error_code = ["import-untyped", "misc"]
+disable_error_code = [
+    # TODO
+    "misc", # 185
+]
 
 [[tool.mypy.overrides]]
 # These modules are to be removed soon, not worth solving many issues
-module = ["matplotlib.*", "networkx.*"]
+module = ["matplotlib.*"]
+disable_error_code = ["assignment", "misc", "untyped-decorator"]
+
+[[tool.mypy.overrides]]
+module = ["sklearn.*"]
 disable_error_code = [
-    "assignment",
-    "misc",
+    # TODO
+    "misc", # 25
+    "overload-overlap", # 14
 ]
+
 [[tool.mypy.overrides]]
-module = ["skimage.*", "sklearn.*"]
-# TODO: Too many untyped decorators still left
-# https://github.com/python/mypy/issues/19148
-disable_error_code = ["misc"]
+module = ["skimage.*"]
+disable_error_code = [
+    # TODO: Too many untyped decorators still left
+    "untyped-decorator", # 52
+]
diff --git a/stubs/sympy-stubs/stats/crv_types.pyi b/stubs/sympy-stubs/stats/crv_types.pyi
index 120fd8ca..5e212ef5 100644
--- a/stubs/sympy-stubs/stats/crv_types.pyi
+++ b/stubs/sympy-stubs/stats/crv_types.pyi
@@ -4,10 +4,9 @@ from typing_extensions import Self
 from sympy import Equality, FiniteSet, Integral, Interval, Ne, Piecewise, Sum
 from sympy.core.basic import Basic
 from sympy.core.relational import Relational
-from sympy.matrices import MatrixBase
 from sympy.stats.crv import SingleContinuousDistribution
 from sympy.stats.joint_rv import JointRandomSymbol
-from sympy.stats.rv import RandomSymbol, is_random
+from sympy.stats.rv import RandomSymbol
 
 oo = ...
 __all__ = [
@@ -66,8 +65,6 @@ __all__ = [
     "WignerSemicircle",
 ]
 
-@is_random.register(MatrixBase)
-def _(x) -> bool: ...
 def rv(symbol, cls, args, **kwargs) -> RandomSymbol: ...
 
 class ContinuousDistributionHandmade(SingleContinuousDistribution):
diff --git a/stubs/sympy-stubs/stats/random_matrix_models.pyi b/stubs/sympy-stubs/stats/random_matrix_models.pyi
index 255b24c2..6cca642f 100644
--- a/stubs/sympy-stubs/stats/random_matrix_models.pyi
+++ b/stubs/sympy-stubs/stats/random_matrix_models.pyi
@@ -1,4 +1,4 @@
-from typing import Any, Literal
+from typing import Any
 from typing_extensions import Self
 
 from sympy import Equality, Integral, Ne
@@ -6,7 +6,7 @@ from sympy.core.basic import Basic
 from sympy.core.function import Lambda
 from sympy.core.relational import Relational
 from sympy.stats.joint_rv_types import JointDistributionHandmade
-from sympy.stats.rv import Density, RandomMatrixSymbol, is_random
+from sympy.stats.rv import Density, RandomMatrixSymbol
 
 __all__ = [
     "CircularEnsemble",
@@ -22,9 +22,6 @@ __all__ = [
     "level_spacing_distribution",
 ]
 
-@is_random.register(RandomMatrixSymbol)
-def _(x) -> Literal[True]: ...
-
 class RandomMatrixEnsembleModel(Basic):
     def __new__(cls, sym, dim=...) -> Self: ...
 
diff --git a/stubs/sympy-stubs/stats/rv.pyi b/stubs/sympy-stubs/stats/rv.pyi
index 66e52fed..a15ef3b5 100644
--- a/stubs/sympy-stubs/stats/rv.pyi
+++ b/stubs/sympy-stubs/stats/rv.pyi
@@ -1,5 +1,4 @@
 from collections.abc import Generator
-from functools import singledispatch
 from typing import Any
 from typing_extensions import Self
 
@@ -24,10 +23,7 @@ from sympy.utilities.decorator import doctest_depends_on
 
 x = ...
 
-@singledispatch
-def is_random(x) -> bool: ...
-@is_random.register(Basic)
-def _(x) -> bool: ...
+def is_random(x: object) -> bool: ...
 
 class RandomDomain(Basic):
     is_ProductDomain = ...
diff --git a/stubs/sympy-stubs/stats/stochastic_process_types.pyi b/stubs/sympy-stubs/stats/stochastic_process_types.pyi
index 60befd05..5fd280f3 100644
--- a/stubs/sympy-stubs/stats/stochastic_process_types.pyi
+++ b/stubs/sympy-stubs/stats/stochastic_process_types.pyi
@@ -1,5 +1,5 @@
 from collections.abc import Generator
-from typing import Any, Literal
+from typing import Any
 from typing_extensions import Self
 
 from sympy import Equality, Integral, Ne, Piecewise, Sum
@@ -23,7 +23,7 @@ from sympy.stats.drv_types import PoissonDistribution
 from sympy.stats.frv_types import BernoulliDistribution
 from sympy.stats.joint_rv import JointDistribution, JointRandomSymbol
 from sympy.stats.joint_rv_types import JointDistributionHandmade
-from sympy.stats.rv import Density, Distribution, RandomIndexedSymbol, RandomSymbol, is_random
+from sympy.stats.rv import Density, Distribution, RandomIndexedSymbol, RandomSymbol
 from sympy.stats.symbolic_multivariate_probability import ExpectationMatrix
 from sympy.stats.symbolic_probability import Expectation, Probability
 from sympy.tensor.indexed import Indexed
@@ -43,11 +43,6 @@ __all__ = [
     "GammaProcess",
 ]
 
-@is_random.register(Indexed)
-def _(x) -> bool: ...
-@is_random.register(RandomIndexedSymbol)
-def _(x) -> Literal[True]: ...
-
 class StochasticProcess(Basic):
     index_set = ...
     def __new__(cls, sym, state_space=..., **kwargs) -> Self: ...
diff --git a/stubs/sympy-stubs/stats/symbolic_probability.pyi b/stubs/sympy-stubs/stats/symbolic_probability.pyi
index 93c88f47..9cc45880 100644
--- a/stubs/sympy-stubs/stats/symbolic_probability.pyi
+++ b/stubs/sympy-stubs/stats/symbolic_probability.pyi
@@ -1,4 +1,4 @@
-from typing import Any, Literal
+from typing import Any
 from typing_extensions import Self
 
 from sympy import Basic, Equality, Integral, Ne, Piecewise, Sum
@@ -8,16 +8,10 @@ from sympy.core.function import Lambda
 from sympy.core.relational import Relational
 from sympy.series.order import Order
 from sympy.stats.frv_types import BernoulliDistribution
-from sympy.stats.rv import RandomSymbol, is_random
 from sympy.stats.symbolic_multivariate_probability import CrossCovarianceMatrix, ExpectationMatrix, VarianceMatrix
 
 __all__ = ["Probability", "Expectation", "Variance", "Covariance"]
 
-@is_random.register(Expr)  # type: ignore[has-type]
-def _(x) -> bool: ...
-@is_random.register(RandomSymbol)  # type: ignore[has-type]
-def _(x) -> Literal[True]: ...
-
 class Probability(Expr):
     def __new__(cls, prob, condition=..., **kwargs) -> Self: ...
     def doit(self, **hints) -> Any | BernoulliDistribution | Probability | Equality | Lambda | Order | Relational | Ne | int: ...