diff --git a/scripts/validation-coverage.tsv b/scripts/validation-coverage.tsv
index ba9f61a..270ab43 100644
--- a/scripts/validation-coverage.tsv
+++ b/scripts/validation-coverage.tsv
@@ -65,6 +65,9 @@ PureYAML.Tagged.ConstructionError	excluded	error enum; data-transfer
 PureYAML.Tagged.Constructor	excluded	tag-construction engine; not a validated subject
 PureYAML.Tagged.BuiltinCheck	excluded	caseless namespace of the tagged layer's built-in checks
 PureYAML.Tagged.Validator	excluded	tagged-tree traversal over the shared Check framework; not a validated subject
+PureYAML.Tagged.Dumper	excluded	tagged-tree emitter; renders a validated Tagged.Node, not a validated subject
+PureYAML.Tagged.ScalarStyle	excluded	closed enum; illegal states unrepresentable
+PureYAML.Tagged.CollectionStyle	excluded	closed enum; illegal states unrepresentable
 
 # --- validation framework's own types ---
 PureYAML.Validation.Validator	excluded	validation machinery; not a validated subject
@@ -87,3 +90,9 @@ PureYAML.Validation.SubjectContext	excluded	read-only context passed to a type-d
 PureYAML.Validation.Check	excluded	the type-directed validation value (Validation<Subject> role); a rule, not a subject
 PureYAML.Validation.AnyCheck	excluded	type-erased check; validation dispatch machinery
 PureYAML.Validation.BuiltinCheck	excluded	caseless namespace of built-in checks
+PureYAML.Streaming.Token.Kind	excluded	closed enum mirroring libyaml token kinds; illegal states unrepresentable
+PureYAML.Streaming.Token.ScalarStyle	excluded	closed enum; illegal states unrepresentable
+PureYAML.Streaming	excluded	caseless namespace; holds no instances or state
+PureYAML.Streaming.Outcome	excluded	closed result enum; illegal states unrepresentable
+PureYAML.Streaming.Scanner	excluded	resumable scanning engine; not a validated subject
+PureYAML.Streaming.Token	excluded	data-transfer scanned token