diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 8c52652..f730e29 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -35,3 +35,4 @@ jobs:
         run: hatch publish -y
         env:
           HATCH_INDEX_AUTH: ${{ secrets.HATCH_INDEX_AUTH }}
+          HATCH_INDEX_USER: ${{ secrets.HATCH_INDEX_USER }}
diff --git a/pyproject.toml b/pyproject.toml
index abe62a3..d3efec0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ dependencies = ["mypy>=1.8.0", "pydocstyle>=6.3.0", "ruff>=0.2.2"]
 features = ["cloud", "file-formats", "validation"]
 
 [tool.hatch.envs.lint.scripts]
-lint = "ruff src"
+lint = "ruff check src"
 typing = "mypy src"
 docs = "pydocstyle src"
 
diff --git a/src/config/configuration.py b/src/config/configuration.py
index bd4c11e..30eb299 100644
--- a/src/config/configuration.py
+++ b/src/config/configuration.py
@@ -402,6 +402,7 @@ def validate(
         self,
         schema: Any,
         raise_on_error: bool = False,
+        nested: bool = False,
         **kwargs: Mapping[str, Any],
     ) -> bool:
         """Validate the current config using JSONSchema."""
@@ -412,7 +413,7 @@ def validate(
                 "Validation requires the `jsonschema` library.",
             ) from None
         try:
-            validate(self.as_dict(), schema, **kwargs)
+            validate(self.as_attrdict() if nested else self.as_dict(), schema, **kwargs)
         except ValidationError as err:
             if raise_on_error:
                 raise err
diff --git a/tests/test_validation.py b/tests/test_validation.py
index 9c2a7ad..d6bc264 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -1,11 +1,11 @@
+"""Validation tests."""
+
+# ruff: noqa: D103
+
+import pytest
 from config import (
-    Configuration,
-    ConfigurationSet,
-    EnvConfiguration,
-    config,
     config_from_dict,
 )
-import pytest
 
 try:
     import jsonschema
@@ -25,7 +25,7 @@ def test_validation_ok():  # type: ignore
                 "type": "array",
                 "items": {"enum": [1, 2, 3]},
                 "maxItems": 2,
-            }
+            },
         },
     }
 
@@ -43,7 +43,7 @@ def test_validation_fail():  # type: ignore
                 "type": "array",
                 "items": {"enum": [1, 2, 3]},
                 "maxItems": 2,
-            }
+            },
         },
     }
 
@@ -89,5 +89,36 @@ def test_validation_format():  # type: ignore
             raise_on_error=True,
             format_checker=Draft202012Validator.FORMAT_CHECKER,
         )
-    print(str(err))
     assert "'10' is not a 'ipv4'" in str(err)
+
+
+@pytest.mark.skipif("jsonschema is None")
+def test_validation_nested():  # type: ignore
+    d = {"item": {"sub1": 1, "sub2": "abc"}}
+    cfg = config_from_dict(d)
+
+    schema = {
+        "type": "object",
+        "properties": {
+            "item.sub1": {"type": "number"},
+            "item.sub2": {"type": "string"},
+        },
+        "required": ["item.sub1", "item.sub2"],
+    }
+    assert cfg.validate(schema)
+
+    schema = {
+        "type": "object",
+        "properties": {
+            "item": {
+                "type": "object",
+                "properties": {
+                    "sub1": {"type": "number"},
+                    "sub2": {"type": "string"},
+                },
+                "required": ["sub1", "sub2"],
+            },
+        },
+        "required": ["item"],
+    }
+    assert cfg.validate(schema, nested=True)