diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 85c73462..08998739 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -45,11 +45,10 @@ jobs:
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
         env:
-          # TODO(jakevdp): re-add 313t & free-threading support
           CIBW_ARCHS_LINUX: auto aarch64
           CIBW_ARCHS_MACOS: universal2
-          CIBW_BUILD: cp39-* cp310-* cp311-* cp312-* cp313-* # cp313t-*
-          # CIBW_FREE_THREADED_SUPPORT: True
+          CIBW_BUILD: cp39-* cp310-* cp311-* cp312-* cp313*
+          CIBW_FREE_THREADED_SUPPORT: True
           CIBW_PRERELEASE_PYTHONS: True
           CIBW_SKIP: "*musllinux* *i686* *win32* *t-win*"
           CIBW_TEST_REQUIRES: absl-py pytest pytest-xdist
diff --git a/ml_dtypes/tests/custom_float_test.py b/ml_dtypes/tests/custom_float_test.py
index 94dc5f53..7eb313bb 100644
--- a/ml_dtypes/tests/custom_float_test.py
+++ b/ml_dtypes/tests/custom_float_test.py
@@ -27,7 +27,7 @@
 from absl.testing import absltest
 from absl.testing import parameterized
 import ml_dtypes
-# from multi_thread_utils import multi_threaded
+from multi_thread_utils import multi_threaded
 import numpy as np
 
 bfloat16 = ml_dtypes.bfloat16
@@ -221,12 +221,16 @@ def dtype_is_signed(dtype):
 }
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
 # pylint: disable=g-complex-comprehension
-# @multi_threaded(
-#     num_workers=3,
-#     skip_tests=["testDiv", "testRoundTripNumpyTypes", "testRoundTripToNumpy"],
-# )
+@multi_threaded(
+    num_workers=3,
+    skip_tests=[
+        "testDiv",
+        "testPickleable",
+        "testRoundTripNumpyTypes",
+        "testRoundTripToNumpy",
+    ],
+)
 @parameterized.named_parameters(
     (
         {"testcase_name": "_" + dtype.__name__, "float_type": dtype}
@@ -661,21 +665,25 @@ def testDtypeFromString(self, float_type):
 ]
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
 # pylint: disable=g-complex-comprehension
-# @multi_threaded(
-#     num_workers=3,
-#     skip_tests=[
-#         "testBinaryUfunc",
-#         "testConformNumpyComplex",
-#         "testFloordivCornerCases",
-#         "testDivmodCornerCases",
-#         "testSpacing",
-#         "testUnaryUfunc",
-#         "testCasts",
-#         "testLdexp",
-#     ],
-# )
+@multi_threaded(
+    num_workers=3,
+    skip_tests=[
+        "testBinaryPredicateUfunc",
+        "testBinaryUfunc",
+        "testCasts",
+        "testConformNumpyComplex",
+        "testDivmod",
+        "testDivmodCornerCases",
+        "testFloordivCornerCases",
+        "testFrexp",
+        "testLdexp",
+        "testModf",
+        "testPredicateUfunc",
+        "testSpacing",
+        "testUnaryUfunc",
+    ],
+)
 @parameterized.named_parameters(
     (
         {"testcase_name": "_" + dtype.__name__, "float_type": dtype}
diff --git a/ml_dtypes/tests/finfo_test.py b/ml_dtypes/tests/finfo_test.py
index 7807fd75..d15311c1 100644
--- a/ml_dtypes/tests/finfo_test.py
+++ b/ml_dtypes/tests/finfo_test.py
@@ -15,7 +15,7 @@
 from absl.testing import absltest
 from absl.testing import parameterized
 import ml_dtypes
-# from multi_thread_utils import multi_threaded
+from multi_thread_utils import multi_threaded
 import numpy as np
 
 ALL_DTYPES = [
@@ -55,8 +55,7 @@
 }
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
-# @multi_threaded(num_workers=3)
+@multi_threaded(num_workers=3)
 class FinfoTest(parameterized.TestCase):
 
   def assertNanEqual(self, x, y):
diff --git a/ml_dtypes/tests/iinfo_test.py b/ml_dtypes/tests/iinfo_test.py
index 4f15446f..8936c523 100644
--- a/ml_dtypes/tests/iinfo_test.py
+++ b/ml_dtypes/tests/iinfo_test.py
@@ -15,12 +15,11 @@
 from absl.testing import absltest
 from absl.testing import parameterized
 import ml_dtypes
-# from multi_thread_utils import multi_threaded
+from multi_thread_utils import multi_threaded
 import numpy as np
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
-# @multi_threaded(num_workers=3)
+@multi_threaded(num_workers=3)
 class IinfoTest(parameterized.TestCase):
 
   def testIinfoInt2(self):
diff --git a/ml_dtypes/tests/intn_test.py b/ml_dtypes/tests/intn_test.py
index 47e9688b..86ab5a81 100644
--- a/ml_dtypes/tests/intn_test.py
+++ b/ml_dtypes/tests/intn_test.py
@@ -23,7 +23,7 @@
 from absl.testing import absltest
 from absl.testing import parameterized
 import ml_dtypes
-# from multi_thread_utils import multi_threaded
+from multi_thread_utils import multi_threaded
 import numpy as np
 
 int2 = ml_dtypes.int2
@@ -48,9 +48,8 @@ def ignore_warning(**kw):
     yield
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
 # Tests for the Python scalar type
-# @multi_threaded(num_workers=3)
+@multi_threaded(num_workers=3)
 class ScalarTest(parameterized.TestCase):
 
   @parameterized.product(scalar_type=INTN_TYPES)
@@ -247,9 +246,8 @@ def testCanCast(self, a, b):
     )
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
 # Tests for the Python scalar type
-# @multi_threaded(num_workers=3, skip_tests=["testBinaryUfuncs"])
+@multi_threaded(num_workers=3, skip_tests=["testBinaryUfuncs"])
 class ArrayTest(parameterized.TestCase):
 
   @parameterized.product(scalar_type=INTN_TYPES)
diff --git a/ml_dtypes/tests/metadata_test.py b/ml_dtypes/tests/metadata_test.py
index 99abe919..81da5367 100644
--- a/ml_dtypes/tests/metadata_test.py
+++ b/ml_dtypes/tests/metadata_test.py
@@ -16,11 +16,10 @@
 
 from absl.testing import absltest
 import ml_dtypes
-# from multi_thread_utils import multi_threaded
+from multi_thread_utils import multi_threaded
 
 
-# TODO(jakevdp): re-enable multi-threaded tests after 0.5.0 release.
-# @multi_threaded(num_workers=3)
+@multi_threaded(num_workers=3)
 class CustomFloatTest(absltest.TestCase):
 
   def test_version_matches_package_metadata(self):