diff --git a/.github/workflows/array-api-tests.yml b/.github/workflows/array-api-tests.yml
index 41d6367..79430c5 100644
--- a/.github/workflows/array-api-tests.yml
+++ b/.github/workflows/array-api-tests.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 env:
   PYTEST_ARGS: "-v -rxXfE --hypothesis-disable-deadline --max-examples 500 -n 4"
-  API_VERSIONS: "2023.12 2024.12"
+  API_VERSIONS: "2023.12 2024.12 2025.12"
 
 jobs:
   array-api-tests:
diff --git a/array_api_strict/_flags.py b/array_api_strict/_flags.py
index 4a099ce..450c91e 100644
--- a/array_api_strict/_flags.py
+++ b/array_api_strict/_flags.py
@@ -30,11 +30,12 @@
     "2022.12",
     "2023.12",
     "2024.12",
+    "2025.12",
 )
 
-draft_version = "2025.12"
+draft_version = "2026.12"
 
-API_VERSION = default_version = "2024.12"
+API_VERSION = default_version = "2025.12"
 
 BOOLEAN_INDEXING = True
 
diff --git a/array_api_strict/tests/test_array_object.py b/array_api_strict/tests/test_array_object.py
index c98981b..0269d13 100644
--- a/array_api_strict/tests/test_array_object.py
+++ b/array_api_strict/tests/test_array_object.py
@@ -669,10 +669,10 @@ def test_array_keys_use_private_array():
 def test_array_namespace():
     a = ones((3, 3))
     assert a.__array_namespace__() == array_api_strict
-    assert array_api_strict.__array_api_version__ == "2024.12"
+    assert array_api_strict.__array_api_version__ == "2025.12"
 
     assert a.__array_namespace__(api_version=None) is array_api_strict
-    assert array_api_strict.__array_api_version__ == "2024.12"
+    assert array_api_strict.__array_api_version__ == "2025.12"
 
     assert a.__array_namespace__(api_version="2022.12") is array_api_strict
     assert array_api_strict.__array_api_version__ == "2022.12"
@@ -685,12 +685,12 @@ def test_array_namespace():
     assert array_api_strict.__array_api_version__ == "2021.12"
 
     with pytest.warns(UserWarning):
-        assert a.__array_namespace__(api_version="2025.12") is array_api_strict
-    assert array_api_strict.__array_api_version__ == "2025.12"
+        assert a.__array_namespace__(api_version="2026.12") is array_api_strict
+    assert array_api_strict.__array_api_version__ == "2026.12"
 
 
     pytest.raises(ValueError, lambda: a.__array_namespace__(api_version="2021.11"))
-    pytest.raises(ValueError, lambda: a.__array_namespace__(api_version="2026.12"))
+    pytest.raises(ValueError, lambda: a.__array_namespace__(api_version="2027.12"))
 
 def test_iter():
     pytest.raises(TypeError, lambda: next(iter(asarray(3))))
diff --git a/array_api_strict/tests/test_flags.py b/array_api_strict/tests/test_flags.py
index 764ca77..8edf5d6 100644
--- a/array_api_strict/tests/test_flags.py
+++ b/array_api_strict/tests/test_flags.py
@@ -19,7 +19,7 @@
 def test_flag_defaults():
     flags = get_array_api_strict_flags()
     assert flags == {
-        'api_version': '2024.12',
+        'api_version': '2025.12',
         'boolean_indexing': True,
         'data_dependent_shapes': True,
         'enabled_extensions': ('linalg', 'fft'),
@@ -36,7 +36,7 @@ def test_reset_flags():
     reset_array_api_strict_flags()
     flags = get_array_api_strict_flags()
     assert flags == {
-        'api_version': '2024.12',
+        'api_version': '2025.12',
         'boolean_indexing': True,
         'data_dependent_shapes': True,
         'enabled_extensions': ('linalg', 'fft'),
@@ -47,7 +47,7 @@ def test_setting_flags():
     set_array_api_strict_flags(data_dependent_shapes=False)
     flags = get_array_api_strict_flags()
     assert flags == {
-        'api_version': '2024.12',
+        'api_version': '2025.12',
         'boolean_indexing': True,
         'data_dependent_shapes': False,
         'enabled_extensions': ('linalg', 'fft'),
@@ -55,7 +55,7 @@ def test_setting_flags():
     set_array_api_strict_flags(enabled_extensions=('fft',))
     flags = get_array_api_strict_flags()
     assert flags == {
-        'api_version': '2024.12',
+        'api_version': '2025.12',
         'boolean_indexing': True,
         'data_dependent_shapes': False,
         'enabled_extensions': ('fft',),
@@ -109,15 +109,15 @@ def test_flags_api_version_2024_12():
 
 
 def test_flags_api_version_2025_12():
-    # Make sure setting the version to 2025.12 issues a warning.
+    # Make sure setting the version to 2026.12 issues a warning.
     with pytest.warns(UserWarning) as record:
-        set_array_api_strict_flags(api_version='2025.12')
+        set_array_api_strict_flags(api_version='2026.12')
     assert len(record) == 1
-    assert '2025.12' in str(record[0].message)
+    assert '2026.12' in str(record[0].message)
     assert 'draft' in str(record[0].message)
     flags = get_array_api_strict_flags()
     assert flags == {
-        'api_version': '2025.12',
+        'api_version': '2026.12',
         'boolean_indexing': True,
         'data_dependent_shapes': True,
         'enabled_extensions': ('linalg', 'fft'),
@@ -136,7 +136,7 @@ def test_setting_flags_invalid():
 
 def test_api_version():
     # Test defaults
-    assert xp.__array_api_version__ == '2024.12'
+    assert xp.__array_api_version__ == '2025.12'
 
     # Test setting the version
     set_array_api_strict_flags(api_version='2023.12')
@@ -444,9 +444,9 @@ def test_environment_variables():
         # ARRAY_API_STRICT_API_VERSION
         ('''\
 import array_api_strict as xp
-assert xp.__array_api_version__ == '2024.12'
+assert xp.__array_api_version__ == '2025.12'
 
-assert xp.get_array_api_strict_flags()['api_version'] == '2024.12'
+assert xp.get_array_api_strict_flags()['api_version'] == '2025.12'
 
 ''', {}),
         *[