diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1b4d2dcf65..1898ab1570 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -50,7 +50,7 @@ repos:
         exclude: 'changelog/|py.typed|disnake/bin/COPYING|.github/PULL_REQUEST_TEMPLATE.md|.github/CODEOWNERS|LICENSE|MANIFEST.in|.gitattributes'
 
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.14.5
+    rev: v0.15.16
     hooks:
       - id: ruff-format
       - id: ruff-check
diff --git a/disnake/client.py b/disnake/client.py
index cd4f675edb..5c9229573e 100644
--- a/disnake/client.py
+++ b/disnake/client.py
@@ -1282,8 +1282,8 @@ def run(self, *args: Any, **kwargs: Any) -> None:
         loop = self.loop
 
         try:
-            loop.add_signal_handler(signal.SIGINT, lambda: loop.stop())
-            loop.add_signal_handler(signal.SIGTERM, lambda: loop.stop())
+            loop.add_signal_handler(signal.SIGINT, loop.stop)
+            loop.add_signal_handler(signal.SIGTERM, loop.stop)
         except NotImplementedError:
             pass
 
diff --git a/disnake/ext/commands/flag_converter.py b/disnake/ext/commands/flag_converter.py
index 95bc428b18..0553a523ba 100644
--- a/disnake/ext/commands/flag_converter.py
+++ b/disnake/ext/commands/flag_converter.py
@@ -326,7 +326,7 @@ def __new__(
 
         keys = [re.escape(k) for k in flags]
         keys.extend(re.escape(a) for a in aliases)
-        keys = sorted(keys, key=lambda t: len(t), reverse=True)
+        keys = sorted(keys, key=len, reverse=True)
 
         joined = "|".join(keys)
         pattern = re.compile(
diff --git a/disnake/user.py b/disnake/user.py
index 70d51a633c..1124eb4edc 100644
--- a/disnake/user.py
+++ b/disnake/user.py
@@ -223,9 +223,7 @@ def collectibles(self) -> Collectibles:
 
         .. versionadded:: 2.11
         """
-        return Collectibles(
-            state=self._state, data=(self._collectibles if self._collectibles else {})
-        )
+        return Collectibles(state=self._state, data=self._collectibles or {})
 
     @property
     def accent_colour(self) -> Colour | None:
diff --git a/pyproject.toml b/pyproject.toml
index a51a16a095..89e7bc08f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ nox = [
     "nox>=2025.5.1",
 ]
 ruff = [
-    "ruff==0.14.5",
+    "ruff==0.15.16",
 ]
 tools = [
     "prek>=0.2.0",
diff --git a/tests/ext/tasks/test_loops.py b/tests/ext/tasks/test_loops.py
index 4a7244b70e..73890d7f0c 100644
--- a/tests/ext/tasks/test_loops.py
+++ b/tests/ext/tasks/test_loops.py
@@ -69,5 +69,5 @@ def test_factory(self) -> None:
         with pytest.raises(TypeError, match="must be callable"):
             loop(cls=...)  # pyright: ignore[reportArgumentType, reportCallIssue]
 
-        @loop(lambda lf: Loop(lf))
+        @loop(lambda lf: Loop(lf))  # noqa: PLW0108
         async def task() -> None: ...