diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/ArchiveLink.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/ArchiveLink.swift
index 3af0f3057..592927982 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/ArchiveLink.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/ArchiveLink.swift
@@ -44,6 +44,7 @@ public extension DataService {
 
             switch payload.data {
             case let .success(linkId):
+              // TODO: update CoreData
               promise(.success(linkId))
             case .error:
               promise(.failure(.message(messageText: "Error archiving link")))
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/CreateLabelPublisher.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/CreateLabelPublisher.swift
index cd266f4f1..62596c9f9 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/CreateLabelPublisher.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/CreateLabelPublisher.swift
@@ -46,6 +46,7 @@ public extension DataService {
 
             switch payload.data {
             case let .saved(label: label):
+              // TODO: update CoreData
               promise(.success(label))
             case let .error(errorCode: errorCode):
               promise(.failure(.message(messageText: errorCode.rawValue)))
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLabelPublisher.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLabelPublisher.swift
index 134954a4f..40f11e5ae 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLabelPublisher.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLabelPublisher.swift
@@ -37,6 +37,7 @@ public extension DataService {
 
             switch payload.data {
             case .success:
+              // TODO: update CoreData
               promise(.success(true))
             case .error:
               promise(.failure(.message(messageText: "Error removing label")))
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLink.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLink.swift
index 0a89e8710..8a007edcf 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLink.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/RemoveLink.swift
@@ -51,6 +51,7 @@ public extension DataService {
 
             switch payload.data {
             case let .success(item):
+              // TODO: update CoreData
               promise(.success(item))
             case .error(errorCode: _):
               promise(.failure(.message(messageText: "Error removing link")))
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleLabelsPublisher.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleLabelsPublisher.swift
index 11d9f4098..484b11dc3 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleLabelsPublisher.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleLabelsPublisher.swift
@@ -44,6 +44,7 @@ public extension DataService {
 
             switch payload.data {
             case let .saved(labels):
+              // TODO: update CoreData
               promise(.success(labels))
             case .error:
               promise(.failure(.message(messageText: "failed to set labels")))
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleReadingProgress.swift b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleReadingProgress.swift
index deaa1394b..b482c8619 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleReadingProgress.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Mutations/UpdateArticleReadingProgress.swift
@@ -1,4 +1,5 @@
 import Combine
+import CoreData
 import Foundation
 import Models
 import SwiftGraphQL
@@ -50,7 +51,7 @@ public extension DataService {
 
             switch payload.data {
             case let .saved(feedItem):
-              // TODO: update core data record
+              self.updateManagedObject(itemID: itemID, readingProgress: readingProgress, anchorIndex: anchorIndex)
               promise(.success(feedItem))
             case let .error(errorCode: errorCode):
               switch errorCode {
@@ -69,4 +70,30 @@ public extension DataService {
     .receive(on: DispatchQueue.main)
     .eraseToAnyPublisher()
   }
+
+  private func updateManagedObject(
+    itemID: String,
+    readingProgress: Double,
+    anchorIndex: Int
+  ) {
+    let context = persistentContainer.viewContext
+
+    let fetchRequest: NSFetchRequest<Models.LinkedItem> = LinkedItem.fetchRequest()
+    fetchRequest.predicate = NSPredicate(
+      format: "id == %@", itemID
+    )
+
+    if let linkedItem = try? context.fetch(fetchRequest).first {
+      linkedItem.readingProgress = readingProgress
+      linkedItem.readingProgressAnchor = Int64(anchorIndex)
+    }
+
+    do {
+      try context.save()
+      DataService.logger.debug("LinkedItem updated succesfully")
+    } catch {
+      context.rollback()
+      DataService.logger.debug("Failed to update LinkedItem: \(error.localizedDescription)")
+    }
+  }
 }
diff --git a/apple/OmnivoreKit/Sources/Services/DataService/Queries/LabelsPublisher.swift b/apple/OmnivoreKit/Sources/Services/DataService/Queries/LabelsPublisher.swift
index 3e01903f9..c110b92ab 100644
--- a/apple/OmnivoreKit/Sources/Services/DataService/Queries/LabelsPublisher.swift
+++ b/apple/OmnivoreKit/Sources/Services/DataService/Queries/LabelsPublisher.swift
@@ -33,6 +33,7 @@ public extension DataService {
           case let .success(payload):
             switch payload.data {
             case let .success(result: result):
+              // TODO: update CoreData
               promise(.success(result))
             case .error:
               promise(.failure(.unknown))