diff --git a/pyproject.toml b/pyproject.toml
index 001fe99..f04af08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,11 +22,9 @@ Repository = "https://github.com/jodal/biip"
 Documentation = "https://biip.readthedocs.io"
 
 [dependency-groups]
-darglint = ["darglint>=1.8.1"]
 dev = [
     "tox>=4.21.2",
     "tox-uv>=1.23.2",
-    { include-group = "darglint" },
     { include-group = "docs" },
     { include-group = "mypy" },
     { include-group = "pyright" },
@@ -95,7 +93,18 @@ reportPrivateUsage = false
 target-version = "py39"
 
 [tool.ruff.lint]
-select = ["ALL"]
+preview = true
+explicit-preview-rules = true
+select = [
+    "ALL",
+    #
+    # Preview rules
+    "DOC201", # docstring-missing-returns
+    "DOC202", # docstring-extraneous-returns
+    "DOC402", # docstring-missing-yields
+    "DOC403", # docstring-extraneous-yields
+    "DOC501", # docstring-missing-exception
+]
 ignore = [
     "PLR2004", # magic-value-comparison
     "S101",    # assert
@@ -121,6 +130,9 @@ ignore = [
 [tool.ruff.lint.isort]
 known-first-party = ["biip"]
 
+[tool.ruff.lint.pydoclint]
+ignore-one-line-docstrings = true
+
 [tool.ruff.lint.pydocstyle]
 convention = "google"
 
diff --git a/setup.cfg b/setup.cfg
deleted file mode 100644
index 31e8f74..0000000
--- a/setup.cfg
+++ /dev/null
@@ -1,9 +0,0 @@
-[darglint]
-ignore =
-    # DAR402: Excess exceptions in Raises section
-    # (we know they are raised from called function)
-    DAR402
-ignore_raise =
-    # Exception is used for cases that are bugs and should never happen.
-    Exception
-strictness = short
diff --git a/src/biip/upc.py b/src/biip/upc.py
index d4caf66..e3c672f 100644
--- a/src/biip/upc.py
+++ b/src/biip/upc.py
@@ -126,7 +126,7 @@ def parse(cls, value: str) -> Upc:
             return cls._parse_upc_e(value)
 
         msg = "Unhandled UPC length. This is a bug."  # pragma: no cover
-        raise Exception(msg)  # noqa: TRY002  # pragma: no cover
+        raise NotImplementedError(msg)  # pragma: no cover
 
     @classmethod
     def _parse_upc_a(cls, value: str) -> Upc:
@@ -222,7 +222,7 @@ def as_upc_a(self) -> str:
         msg = (  # pragma: no cover
             "Unhandled case while formatting as UPC-A. This is a bug."
         )
-        raise Exception(msg)  # noqa: TRY002  # pragma: no cover
+        raise NotImplementedError(msg)  # pragma: no cover
 
     def as_upc_e(self) -> str:
         """Format as UPC-E.
@@ -245,7 +245,7 @@ def as_upc_e(self) -> str:
         msg = (  # pragma: no cover
             "Unhandled case while formatting as UPC-E. This is a bug."
         )
-        raise Exception(msg)  # noqa: TRY002  # pragma: no cover
+        raise NotImplementedError(msg)  # pragma: no cover
 
     def as_gtin_12(self) -> str:
         """Format as GTIN-12."""