diff --git a/bento_lib/auth/middleware/base.py b/bento_lib/auth/middleware/base.py
index 9cb0a46..790b0d3 100644
--- a/bento_lib/auth/middleware/base.py
+++ b/bento_lib/auth/middleware/base.py
@@ -7,7 +7,10 @@
 
 from ..exceptions import BentoAuthException
 
-__all__ = ["BaseAuthMiddleware"]
+__all__ = ["EvaluationResultMatrix", "BaseAuthMiddleware"]
+
+
+EvaluationResultMatrix = tuple[tuple[bool, ...], ...]
 
 
 class BaseAuthMiddleware(ABC):
@@ -96,7 +99,7 @@ def _evaluate_body(resources: Iterable[dict], permissions: Iterable[str]) -> dic
         return {"resources": tuple(resources), "permissions": tuple(permissions)}
 
     @staticmethod
-    def _matrix_tuple_cast(authz_result: list[list[bool]]) -> tuple[tuple[bool, ...]]:
+    def _matrix_tuple_cast(authz_result: list[list[bool]]) -> tuple[tuple[bool, ...], ...]:
         return tuple(tuple(x) for x in authz_result)
 
     def evaluate(
@@ -107,7 +110,7 @@ def evaluate(
         require_token: bool = False,
         headers_getter: Callable[[Any], dict[str, str]] | None = None,
         mark_authz_done: bool = False,
-    ) -> tuple[tuple[bool, ...]]:
+    ) -> EvaluationResultMatrix:
         if mark_authz_done:
             self.mark_authz_done(request)
         return self._matrix_tuple_cast(
@@ -159,7 +162,7 @@ async def async_evaluate(
         require_token: bool = False,
         headers_getter: Callable[[Any], dict[str, str]] | None = None,
         mark_authz_done: bool = False,
-    ) -> tuple[tuple[bool, ...]]:
+    ) -> EvaluationResultMatrix:
         if mark_authz_done:
             self.mark_authz_done(request)
         return self._matrix_tuple_cast(
@@ -228,7 +231,7 @@ async def async_check_authz_evaluate(
         require_token: bool = True,
         set_authz_flag: bool = False,
         headers_getter: Callable[[Any], dict[str, str]] | None = None,
-    ):
+    ) -> None:
         if not self.enabled:
             return
 
diff --git a/bento_lib/package.cfg b/bento_lib/package.cfg
index 41b9ac7..7bd5eb8 100644
--- a/bento_lib/package.cfg
+++ b/bento_lib/package.cfg
@@ -1,5 +1,5 @@
 [package]
 name = bento_lib
-version = 9.0.0a1
+version = 9.0.0a2
 authors = David Lougheed, Paul Pillot
 author_emails = david.lougheed@mail.mcgill.ca, paul.pillot@computationalgenomics.ca
diff --git a/bento_lib/workflows/models.py b/bento_lib/workflows/models.py
index a4a448a..5d7777d 100644
--- a/bento_lib/workflows/models.py
+++ b/bento_lib/workflows/models.py
@@ -37,36 +37,36 @@ class WorkflowBaseInput(FrozenBaseModel):
 
 
 class WorkflowInjectedInput(WorkflowBaseInput):
-    injected: Literal[True]
+    injected: Literal[True] = True
 
 
 class WorkflowStringInput(WorkflowBaseInput):
-    type: Literal["string"]
+    type: Literal["string"] = "string"
 
 
 class WorkflowStringArrayInput(WorkflowBaseInput):
-    type: Literal["string[]"]
+    type: Literal["string[]"] = "string[]"
 
 
 class WorkflowNumberInput(WorkflowBaseInput):
-    type: Literal["number"]
+    type: Literal["number"] = "number"
 
 
 class WorkflowNumberArrayInput(WorkflowBaseInput):
-    type: Literal["number[]"]
+    type: Literal["number[]"] = "number[]"
 
 
 class WorkflowBooleanInput(WorkflowBaseInput):
-    type: Literal["boolean"]
+    type: Literal["boolean"] = "boolean"
 
 
 class WorkflowEnumInput(WorkflowBaseInput):
-    type: Literal["enum"]
+    type: Literal["enum"] = "enum"
     values: list[str] | HttpUrl  # list of values, or a URL returning an array of enum values
 
 
 class WorkflowEnumArrayInput(WorkflowBaseInput):
-    type: Literal["enum[]"]
+    type: Literal["enum[]"] = "enum[]"
     values: list[str] | HttpUrl  # list of values, or a URL returning an array of enum values
     repeatable: bool = True
 
@@ -77,28 +77,28 @@ class WorkflowProjectDatasetInput(WorkflowBaseInput):
 
 class WorkflowFileInput(WorkflowBaseInput):
     # can be sourced from drop box / DRS / workflow outputs, whatever the UI decides works
-    type: Literal["file"]
+    type: Literal["file"] = "file"
     pattern: str = "*"  # file name regular expression pattern
 
 
 class WorkflowFileArrayInput(WorkflowBaseInput):
     # can be sourced from drop box / DRS / workflow outputs, whatever the UI decides works
-    type: Literal["file[]"]
+    type: Literal["file[]"] = "file[]"
     pattern: str = "*"  # file name regular expression pattern
 
 
 class WorkflowDirectoryInput(WorkflowBaseInput):
     # can be sourced from drop box / DRS / workflow outputs, whatever the UI decides works
-    type: Literal["directory"]
+    type: Literal["directory"] = "directory"
 
 
 class WorkflowDirectoryArrayInput(WorkflowBaseInput):
     # can be sourced from drop box / DRS / workflow outputs, whatever the UI decides works
-    type: Literal["directory[]"]
+    type: Literal["directory[]"] = "directory[]"
 
 
 class WorkflowServiceUrlInput(WorkflowInjectedInput):
-    type: Literal["service-url"]
+    type: Literal["service-url"] = "service-url"
     service_kind: str