diff --git a/tests/fixtures/type_alias_310_fixed.py b/tests/fixtures/type_alias_310_fixed.py
deleted file mode 100644
index 0ae8391a..00000000
--- a/tests/fixtures/type_alias_310_fixed.py
+++ /dev/null
@@ -1,3 +0,0 @@
-"""Type Alias requires Python 3.10+"""
-
-Alias = int | str
diff --git a/tests/fixtures/type_alias_310.py b/tests/fixtures/type_alias_312.py
similarity index 56%
rename from tests/fixtures/type_alias_310.py
rename to tests/fixtures/type_alias_312.py
index 64a94153..5a151015 100644
--- a/tests/fixtures/type_alias_310.py
+++ b/tests/fixtures/type_alias_312.py
@@ -1,4 +1,4 @@
-"""Type Alias requires Python 3.10+"""
+"""Type Alias requires Python 3.12+"""
 from typing import Union
 
 Alias = Union[int, str]
diff --git a/tests/fixtures/type_alias_312_fixed.py b/tests/fixtures/type_alias_312_fixed.py
new file mode 100644
index 00000000..8b7c595a
--- /dev/null
+++ b/tests/fixtures/type_alias_312_fixed.py
@@ -0,0 +1,3 @@
+"""Type Alias requires Python 3.12+"""
+
+type Alias = int | str
diff --git a/tests/test_main.py b/tests/test_main.py
index c72b195c..247665db 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -135,10 +135,10 @@ async def test_py_version(
             id="type_alias_pep585_39_updated",
         ),
         pytest.param(
-            'type_alias_310.py', 'type_alias_310_fixed.py',
-            None, 0,
-            id="type_alias_pep604_310_updated",
-            marks=pytest.mark.xfail(reason="Not implented in mypy + pyupgrade (yet)"),
+            'type_alias_312.py', 'type_alias_312_fixed.py',
+            ['--py312-plus'], 0,
+            id="type_alias_pep604_312_updated",
+            marks=pytest.mark.xfail(reason="Not implented in pyupgrade (yet)"),
         ),
     ),
 )