diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index b8a3a0c0..4f470b9f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,13 +3,13 @@ default_language_version:
 exclude: "^src/atomate2/vasp/schemas/calc_types/"
 repos:
   - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.3.4
+    rev: v0.4.2
     hooks:
       - id: ruff
         args: [--fix]
       - id: ruff-format
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.5.0
+    rev: v4.6.0
     hooks:
       - id: check-yaml
       - id: fix-encoding-pragma
@@ -23,7 +23,7 @@ repos:
         additional_dependencies: [black]
         exclude: ^(README.md|paper/paper.md)$
   - repo: https://github.com/pycqa/flake8
-    rev: 6.1.0
+    rev: 7.0.0
     hooks:
       - id: flake8
         entry: pflake8
@@ -43,7 +43,7 @@ repos:
       - id: rst-directive-colons
       - id: rst-inline-touching-normal
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.9.0
+    rev: v1.10.0
     hooks:
       - id: mypy
         files: ^src/
diff --git a/src/jobflow/core/flow.py b/src/jobflow/core/flow.py
index 287950c7..3a8edb0d 100644
--- a/src/jobflow/core/flow.py
+++ b/src/jobflow/core/flow.py
@@ -158,9 +158,8 @@ def __setitem__(
         self, idx: int | slice, value: Flow | Job | Sequence[Flow | Job]
     ) -> None:
         """Set the job(s) or subflow(s) at the given index/slice."""
-        if (
-            not isinstance(value, (Flow, jobflow.Job, tuple, list))
-            or isinstance(value, (tuple, list))
+        if not isinstance(value, (Flow, jobflow.Job, tuple, list)) or (
+            isinstance(value, (tuple, list))
             and not all(isinstance(v, (Flow, jobflow.Job)) for v in value)
         ):
             raise TypeError(
diff --git a/src/jobflow/core/job.py b/src/jobflow/core/job.py
index 4d0c9b3b..0aaab450 100644
--- a/src/jobflow/core/job.py
+++ b/src/jobflow/core/job.py
@@ -1151,8 +1151,8 @@ def add_hosts_uuids(self, hosts_uuids: str | Sequence[str], prepend: bool = Fals
         prepend
             Insert the UUIDs at the beginning of the list rather than extending it.
         """
-        if not isinstance(hosts_uuids, (list, tuple)):
-            hosts_uuids = [hosts_uuids]  # type: ignore
+        if isinstance(hosts_uuids, str):
+            hosts_uuids = [hosts_uuids]
         if prepend:
             self.hosts[0:0] = hosts_uuids
         else:
diff --git a/src/jobflow/core/maker.py b/src/jobflow/core/maker.py
index d62ac357..8344f67a 100644
--- a/src/jobflow/core/maker.py
+++ b/src/jobflow/core/maker.py
@@ -269,9 +269,7 @@ def _filter(nested_obj: Maker):
             return False
         if name_filter is not None and name_filter not in nested_obj.name:
             return False
-        if class_filter is not None and not isinstance(nested_obj, class_filter):
-            return False
-        return True
+        return class_filter is None or isinstance(nested_obj, class_filter)
 
     d = obj.as_dict()
 
diff --git a/src/jobflow/core/reference.py b/src/jobflow/core/reference.py
index 10d774b3..4ec338a2 100644
--- a/src/jobflow/core/reference.py
+++ b/src/jobflow/core/reference.py
@@ -82,7 +82,7 @@ class OutputReference(MSONable):
     OutputReference(1234, ['key'], [0], .value)
     """
 
-    __slots__ = ("uuid", "attributes", "output_schema")
+    __slots__ = ("attributes", "output_schema", "uuid")
 
     def __init__(
         self,
diff --git a/src/jobflow/utils/uid.py b/src/jobflow/utils/uid.py
index 86ddd89c..8ef3ead4 100644
--- a/src/jobflow/utils/uid.py
+++ b/src/jobflow/utils/uid.py
@@ -12,7 +12,7 @@
         "Install it with `pip install jobflow[ulid]` or `pip install python-ulid`."
     )
 
-    class ULID:  # type: ignore
+    class ULID:  # type: ignore[no-redef]
         """Fake ULID class for raising import error."""
 
         def __init__(self, *args, **kwargs):