diff --git a/sdk/python/lib/pulumi/automation/_project_settings.py b/sdk/python/lib/pulumi/automation/_project_settings.py
index 33f70af9aabe..d15d6a35ab8f 100644
--- a/sdk/python/lib/pulumi/automation/_project_settings.py
+++ b/sdk/python/lib/pulumi/automation/_project_settings.py
@@ -56,7 +56,7 @@ def __init__(
         self,
         description: Optional[str] = None,
         quickstart: Optional[str] = None,
-        config: Mapping[str, ProjectTemplateConfigValue] = None,
+        config: Optional[Mapping[str, ProjectTemplateConfigValue]] = None,
         important: Optional[bool] = None,
     ):
         self.description = description
diff --git a/sdk/python/lib/pulumi/automation/events.py b/sdk/python/lib/pulumi/automation/events.py
index 9afae4e19503..978237d43be0 100644
--- a/sdk/python/lib/pulumi/automation/events.py
+++ b/sdk/python/lib/pulumi/automation/events.py
@@ -347,8 +347,8 @@ def __init__(
         custom: Optional[bool] = None,
         delete: Optional[bool] = None,
         protect: Optional[bool] = None,
-        inputs: Mapping[str, Any] = None,
-        outputs: Mapping[str, Any] = None,
+        inputs: Optional[Mapping[str, Any]] = None,
+        outputs: Optional[Mapping[str, Any]] = None,
         init_errors: Optional[List[str]] = None,
     ):
         self.type = type
diff --git a/sdk/python/lib/pulumi/resource.py b/sdk/python/lib/pulumi/resource.py
index 41beb37c926b..fcbc44c5d3a5 100644
--- a/sdk/python/lib/pulumi/resource.py
+++ b/sdk/python/lib/pulumi/resource.py
@@ -1251,8 +1251,8 @@ def create_urn(
     name: "Input[str]",
     type_: "Input[str]",
     parent: Optional[Union["Resource", "Input[str]"]] = None,
-    project: str = None,
-    stack: str = None,
+    project: Optional[str] = None,
+    stack: Optional[str] = None,
 ) -> "Output[str]":
     """
     create_urn computes a URN from the combination of a resource name, resource type, optional