diff --git a/ApolloCombine.podspec b/ApolloCombine.podspec
index 6a0c101..5af9cbc 100644
--- a/ApolloCombine.podspec
+++ b/ApolloCombine.podspec
@@ -17,7 +17,7 @@ Pod::Spec.new do |s|
   s.source_files = 'Sources/ApolloCombine/*.swift'
 
   s.weak_frameworks = 'SwiftUI', 'Combine'
-  s.dependency 'Apollo/Core', '~> 1.5'
+  s.dependency 'Apollo/Core', '~> 1.9'
   s.swift_version = '5.6'
 
 end
diff --git a/Package.swift b/Package.swift
index b778757..bcc2249 100644
--- a/Package.swift
+++ b/Package.swift
@@ -15,7 +15,7 @@ let package = Package(
     .library(name: "ApolloCombine",targets: ["ApolloCombine"]),
   ],
   dependencies: [
-    .package(url: "https://github.com/apollographql/apollo-ios.git", .upToNextMajor(from: "1.5.0"))
+    .package(url: "https://github.com/apollographql/apollo-ios.git", .upToNextMajor(from: "1.9.0"))
   ],
   targets: [
     .target(name: "ApolloCombine", dependencies: [.product(name: "Apollo", package: "apollo-ios")])
diff --git a/Sources/ApolloCombine/ApolloClientExtensions.swift b/Sources/ApolloCombine/ApolloClientExtensions.swift
index 9e5b623..d84e0bf 100644
--- a/Sources/ApolloCombine/ApolloClientExtensions.swift
+++ b/Sources/ApolloCombine/ApolloClientExtensions.swift
@@ -13,7 +13,7 @@ public extension ApolloClientProtocol {
   /// - Parameters:
   ///   - query: The query to fetch.
   ///   - cachePolicy: A cache policy that specifies when results should be fetched from the server and when data should be loaded from the local cache. Defaults to ``.default`.
-  ///   - contextIdentifier: [optional] A unique identifier for this request, to help with deduping cache hits for watchers. Defaults to `nil`.
+  ///   - contextIdentifier: [optional] A unique identifier for this request, to help with deduping cache hits for watchers. Should default to `nil`.
   ///   - context: [optional] A context that is being passed through the request chain. Defaults to `nil`.
   ///   - queue: A dispatch queue on which the result handler will be called. Defaults to the main queue.
   /// - Returns: A publisher that delivers results from the fetch operation.
@@ -36,16 +36,19 @@ public extension ApolloClientProtocol {
   /// - Parameters:
   ///   - mutation: The mutation to perform.
   ///   - publishResultToStore: If `true`, this will publish the result returned from the operation to the cache store. Defaults to `true`.
+  ///   - contextIdentifier: [optional] A unique identifier for this request, to help with deduping cache hits for watchers. Should default to `nil`.
   ///   - context: [optional] A context that is being passed through the request chain. Defaults to `nil`.
   ///   - queue: A dispatch queue on which the result handler will be called. Defaults to the main queue.
   /// - Returns: A publisher that delivers results from the perform operation.
   func performPublisher<Mutation: GraphQLMutation>(mutation: Mutation,
                                                    publishResultToStore: Bool = true,
+                                                   contextIdentifier: UUID? = nil,
                                                    context: RequestContext? = nil,
                                                    queue: DispatchQueue = .main) -> Publishers.ApolloPerform<Mutation> {
     let config = Publishers.ApolloPerformConfiguration(client: self, 
                                                        mutation: mutation,
                                                        publishResultToStore: publishResultToStore,
+                                                       contextIdentifier: contextIdentifier,
                                                        context: context,
                                                        queue: queue)
     return Publishers.ApolloPerform(with: config)
diff --git a/Sources/ApolloCombine/PublishersExtensions.swift b/Sources/ApolloCombine/PublishersExtensions.swift
index d2c3e7c..5261c64 100644
--- a/Sources/ApolloCombine/PublishersExtensions.swift
+++ b/Sources/ApolloCombine/PublishersExtensions.swift
@@ -100,6 +100,7 @@ public extension Publishers {
     let client: ApolloClientProtocol
     let mutation: Mutation
     let publishResultToStore: Bool
+    let contextIdentifier: UUID?
     let context: RequestContext?
     let queue: DispatchQueue
   }
@@ -118,6 +119,7 @@ public extension Publishers {
     func request(_ demand: Subscribers.Demand) {
       task = configuration.client.perform(mutation: configuration.mutation,
                                           publishResultToStore: configuration.publishResultToStore,
+                                          contextIdentifier: configuration.contextIdentifier,
                                           context: configuration.context,
                                           queue: configuration.queue)
       { [weak self] result in