diff --git a/databaseparsers/__init__.py b/databaseparsers/__init__.py
index 76873d6..ff1e995 100644
--- a/databaseparsers/__init__.py
+++ b/databaseparsers/__init__.py
@@ -29,10 +29,11 @@ class EntryPoint(ParserEntryPoint):
         This class must have a function `def parse(self, mainfile, archive, logger)`.
     """
     )
-    code_name: Optional[str]
-    code_homepage: Optional[str]
-    code_category: Optional[str]
+    code_name: Optional[str] = None
+    code_homepage: Optional[str] = None
+    code_category: Optional[str] = None
     metadata: Optional[dict] = Field(
+        None,
         description="""
         Metadata passed to the UI. Deprecated. """
     )
diff --git a/pyproject.toml b/pyproject.toml
index 542abb0..5f85b21 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,10 +10,10 @@ readme = "README.md"
 authors = [{ name = "The NOMAD Authors" }]
 license = { file = "LICENSE" }
 dependencies = [
-    "nomad-lab>=1.3.6.dev1",
+    "nomad-lab>=1.3.7",
     "nomad-schema-plugin-simulation-workflow>=1.0.1",
     "nomad-schema-plugin-run>=1.0.1",
-    "pydantic>=1.10.8,<2.0.0",
+    "pydantic>=1.10.8",
 ]
 
 [project.urls]
@@ -21,16 +21,13 @@ homepage = "https://github.com/nomad-coe/database-parsers"
 
 [project.optional-dependencies]
 tests = [
-    "mypy==1.0.1",
-    "pylint==2.13.9",
-    "pylint_plugin_utils==0.5",
-    "pycodestyle==2.8.0",
-    "pytest==3.10.0",
+    "pytest>= 5.3.0, <= 8.0.2",
     "pytest-timeout==1.4.2",
     "pytest-cov==2.7.1",
-    "astroid==2.11.7",
-    "typing-extensions==4.4.0",
-    "ruff==0.1.8",
+    "astroid>=2.5.1",
+    'mypy==1.0.1',
+    'ruff>=0.6',
+    'typing-extensions>=4.12',
 ]
 
 [tool.ruff]