diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6c1b807c..9d501226 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,7 +10,7 @@ repos:
       - id: check-yaml
       - id: check-added-large-files
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.6.2
+    rev: v0.6.4
     hooks:
       - id: ruff
         name: ruff check
@@ -24,7 +24,7 @@ repos:
         name: ruff format
         alias: format
   - repo: https://github.com/RobertCraigie/pyright-python
-    rev: v1.1.377
+    rev: v1.1.379
     hooks:
       - id: pyright
         additional_dependencies: [cython, httpretty, numpy, pytest]
diff --git a/cryosparc/dataset.py b/cryosparc/dataset.py
index d2486a24..35df24aa 100644
--- a/cryosparc/dataset.py
+++ b/cryosparc/dataset.py
@@ -820,7 +820,7 @@ def __init__(
             Data,
             Mapping[str, "ArrayLike"],
             List[Tuple[str, "ArrayLike"]],
-            Literal[None],
+            None,
         ] = 0,
         row_class=Row,
     ):
@@ -1084,7 +1084,7 @@ def add_fields(self, fields: Sequence[str], dtypes: Union[str, Sequence["DTypeLi
     def add_fields(
         self,
         fields: Union[Sequence[str], Sequence[Field]],
-        dtypes: Union[str, Sequence["DTypeLike"], Literal[None]] = None,
+        dtypes: Union[str, Sequence["DTypeLike"], None] = None,
     ) -> "Dataset[R]":
         """
         Adds the given fields to the dataset. If a field with the same name
diff --git a/cryosparc/job.py b/cryosparc/job.py
index 14ccf40d..4ed24ede 100644
--- a/cryosparc/job.py
+++ b/cryosparc/job.py
@@ -496,8 +496,8 @@ def log_plot(
         figure: Union[str, PurePath, IO[bytes], Any],
         text: str,
         formats: Iterable[ImageFormat] = ["png", "pdf"],
-        raw_data: Union[str, bytes, Literal[None]] = None,
-        raw_data_file: Union[str, PurePath, IO[bytes], Literal[None]] = None,
+        raw_data: Union[str, bytes, None] = None,
+        raw_data_file: Union[str, PurePath, IO[bytes], None] = None,
         raw_data_format: Optional[TextFormat] = None,
         flags: List[str] = ["plots"],
         savefig_kw: dict = dict(bbox_inches="tight", pad_inches=0),
@@ -767,8 +767,8 @@ def upload_plot(
         figure: Union[str, PurePath, IO[bytes], Any],
         name: Optional[str] = None,
         formats: Iterable[ImageFormat] = ["png", "pdf"],
-        raw_data: Union[str, bytes, Literal[None]] = None,
-        raw_data_file: Union[str, PurePath, IO[bytes], Literal[None]] = None,
+        raw_data: Union[str, bytes, None] = None,
+        raw_data_file: Union[str, PurePath, IO[bytes], None] = None,
         raw_data_format: Optional[TextFormat] = None,
         savefig_kw: dict = dict(bbox_inches="tight", pad_inches=0),
     ) -> List[EventLogAsset]:
@@ -965,7 +965,7 @@ def subprocess(
         args: Union[str, list],
         mute: bool = False,
         checkpoint: bool = False,
-        checkpoint_line_pattern: Union[str, Pattern[str], Literal[None]] = None,
+        checkpoint_line_pattern: Union[str, Pattern[str], None] = None,
         **kwargs,
     ):
         """
@@ -1255,21 +1255,20 @@ def add_input(
     def add_output(
         self,
         type: Datatype,
-        name: Optional[str] = ...,
-        slots: List[SlotSpec] = ...,
-        passthrough: Optional[str] = ...,
-        title: Optional[str] = None,
-        alloc: Literal[None] = None,
+        name: Optional[str],
+        slots: List[SlotSpec],
+        passthrough: Optional[str],
+        title: Optional[str],
     ) -> str: ...
     @overload
     def add_output(
         self,
         type: Datatype,
-        name: Optional[str] = ...,
-        slots: List[SlotSpec] = ...,
-        passthrough: Optional[str] = ...,
-        title: Optional[str] = None,
-        alloc: Union[int, Dataset] = ...,
+        name: Optional[str],
+        slots: List[SlotSpec],
+        passthrough: Optional[str],
+        title: Optional[str],
+        alloc: Union[int, Dataset],
     ) -> Dataset: ...
     def add_output(
         self,
@@ -1278,7 +1277,7 @@ def add_output(
         slots: List[SlotSpec] = [],
         passthrough: Optional[str] = None,
         title: Optional[str] = None,
-        alloc: Union[int, Dataset, Literal[None]] = None,
+        alloc: Union[int, Dataset, None] = None,
     ) -> Union[str, Dataset]:
         """
         Add an output slot to the current job. Optionally returns the
diff --git a/cryosparc/util.py b/cryosparc/util.py
index eb2ee6b2..cf46df91 100644
--- a/cryosparc/util.py
+++ b/cryosparc/util.py
@@ -320,7 +320,7 @@ def random_integers(
     rng: "n.random.Generator",
     low: int,
     high: Optional[int] = None,
-    size: Union[int, Shape, Literal[None]] = None,
+    size: Union[int, Shape, None] = None,
     dtype: Type[INT] = n.uint64,
 ) -> "NDArray[INT]":
     """