diff --git a/Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift b/Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift
index 53b6e3b4..46025789 100644
--- a/Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift
+++ b/Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift
@@ -10,6 +10,7 @@ import Foundation
 import Pachyderm
 import UniformTypeIdentifiers
 
+@MainActor
 class PostService: ObservableObject {
     private let mastodonController: ComposeMastodonContext
     private let config: ComposeUIConfig
@@ -26,7 +27,6 @@ class PostService: ObservableObject {
         self.totalSteps = 2 + (draft.attachments.count * 2)
     }
     
-    @MainActor
     func post() async throws {
         guard draft.hasContent else {
             return
@@ -65,7 +65,6 @@ class PostService: ObservableObject {
         }
     }
     
-    @MainActor
     private func uploadAttachments() async throws -> [Attachment] {
         var attachments: [Attachment] = []
         attachments.reserveCapacity(draft.attachments.count)