diff --git a/Sources/Introspect.swift b/Sources/Introspect.swift
index d7b99469..6866d30b 100644
--- a/Sources/Introspect.swift
+++ b/Sources/Introspect.swift
@@ -107,7 +107,7 @@ struct IntrospectModifier<SwiftUIViewType: IntrospectableViewType, PlatformSpeci
 }
 
 @MainActor
-public protocol PlatformEntity: AnyObject {
+public protocol PlatformEntity: AnyObject, Sendable {
     associatedtype Base: PlatformEntity
 
     @_spi(Internals)