diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index b268138..d367fa2 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -5,4 +5,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: chartboost/ruff-action@v1
+      - uses: astral-sh/ruff-action@v1
diff --git a/easyDataverse/base.py b/easyDataverse/base.py
index 4d13c0c..0c67ce9 100644
--- a/easyDataverse/base.py
+++ b/easyDataverse/base.py
@@ -395,10 +395,10 @@ def _construct_example_ds(cls, block):
 
         for field in block.model_fields.values():
             annot = field.annotation
-            dtype = [t for t in get_args(annot) if t != type(None)][0]
+            dtype = [t for t in get_args(annot) if t is not type(None)][0]
             alias = field.alias
 
-            is_multiple = get_origin(annot) == list
+            is_multiple = get_origin(annot) is list
             is_complex = hasattr(dtype, "model_fields")
 
             if dtype.__name__ == "Annotated":
diff --git a/tests/unit/test_connect.py b/tests/unit/test_connect.py
index 8e45b97..801a309 100644
--- a/tests/unit/test_connect.py
+++ b/tests/unit/test_connect.py
@@ -434,9 +434,9 @@ class TestClass(BaseModel):
         # Assert
         assert result[0].name == "name"
         assert result[0].default.__name__ == "empty"
-        assert result[0].type == str
+        assert result[0].type is str
         assert result[1].name == "value"
-        assert result[1].type == int
+        assert result[1].type is int
         assert result[1].default.__name__ == "empty"
         assert result[2].name == "optional"
         assert result[2].type == Optional[str]
@@ -665,7 +665,7 @@ def test_single_cv_field(self):
 
         # Assert
         generated_enum = get_args(result)[0]
-        assert get_args(result)[1] == type(None)
+        assert get_args(result)[1] is type(None)
         assert issubclass(generated_enum, Enum)
         assert generated_enum.__name__ == "single_cv_field"
         assert generated_enum.VALUE1.value == "value1"