diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cd9cf25c..be1ec596 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
       - id: black
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.7
+    rev: v0.5.0
     hooks:
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
diff --git a/tests/test_annotations.py b/tests/test_annotations.py
index d27d9e37..516c53ff 100644
--- a/tests/test_annotations.py
+++ b/tests/test_annotations.py
@@ -120,15 +120,15 @@ class TestAnnotations:
 
         attr.resolve_types(C)
 
-        assert int == attr.fields(C).a.type
+        assert int is attr.fields(C).a.type
 
         assert attr.Factory(list) == attr.fields(C).x.default
-        assert typing.List[int] == attr.fields(C).x.type
+        assert typing.List[int] is attr.fields(C).x.type
 
-        assert int == attr.fields(C).y.type
+        assert int is attr.fields(C).y.type
         assert 2 == attr.fields(C).y.default
 
-        assert int == attr.fields(C).z.type
+        assert int is attr.fields(C).z.type
 
         assert typing.Any == attr.fields(C).foo.type
 
@@ -534,7 +534,7 @@ class TestAnnotations:
 
         attr.resolve_types(C, globals)
 
-        assert attr.fields(C).x.type == Annotated[float, "test"]
+        assert Annotated[float, "test"] is attr.fields(C).x.type
 
         @attr.define
         class D:
@@ -542,7 +542,7 @@ class TestAnnotations:
 
         attr.resolve_types(D, globals, include_extras=False)
 
-        assert attr.fields(D).x.type == float
+        assert float is attr.fields(D).x.type
 
     def test_resolve_types_auto_attrib(self, slots):
         """
@@ -658,8 +658,8 @@ class TestAnnotations:
         attr.resolve_types(A)
         attr.resolve_types(B)
 
-        assert int == attr.fields(A).n.type
-        assert int == attr.fields(B).n.type
+        assert int is attr.fields(A).n.type
+        assert int is attr.fields(B).n.type
 
     def test_resolve_twice(self):
         """
@@ -672,9 +672,12 @@ class TestAnnotations:
             n: "int"
 
         attr.resolve_types(A)
-        assert int == attr.fields(A).n.type
+
+        assert int is attr.fields(A).n.type
+
         attr.resolve_types(A)
-        assert int == attr.fields(A).n.type
+
+        assert int is attr.fields(A).n.type
 
 
 @pytest.mark.parametrize(
diff --git a/tests/test_make.py b/tests/test_make.py
index 736ab8cf..a5490f9e 100644
--- a/tests/test_make.py
+++ b/tests/test_make.py
@@ -1099,7 +1099,7 @@ class TestMakeClass:
 
         cls = make_class("C", {})
 
-        assert cls.__mro__[-1] == object
+        assert cls.__mro__[-1] is object
 
         cls = make_class("C", {}, bases=(D,))
 
diff --git a/tests/test_next_gen.py b/tests/test_next_gen.py
index 7d053d21..a46183e0 100644
--- a/tests/test_next_gen.py
+++ b/tests/test_next_gen.py
@@ -36,7 +36,7 @@ class TestNextGen:
 
         A = attrs.make_class("A", classFields)
 
-        assert int == attrs.fields(A).testint.type
+        assert int is attrs.fields(A).testint.type
 
     def test_no_slots(self):
         """