diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 7bf8a0fc56a..2c3e1f0387b 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -12,7 +12,7 @@ env:
 
 jobs:
   benchmarks:
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
diff --git a/.github/workflows/bump-kotlin-nightlies.yml b/.github/workflows/bump-kotlin-nightlies.yml
index ac488be2ea4..e9cbcbb37f0 100644
--- a/.github/workflows/bump-kotlin-nightlies.yml
+++ b/.github/workflows/bump-kotlin-nightlies.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   push-kotlin-nightlies-branch:
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
         with:
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 498fe496ea3..2d8c5c61066 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   nightly:
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - run: |
diff --git a/.github/workflows/platform-api-tests.yml b/.github/workflows/platform-api-tests.yml
index f1048b70872..6bc4fa4b069 100644
--- a/.github/workflows/platform-api-tests.yml
+++ b/.github/workflows/platform-api-tests.yml
@@ -12,7 +12,7 @@ env:
 
 jobs:
   platform-api-tests:
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - name: Checkout project
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 652a920e528..b0319315dab 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -18,7 +18,7 @@ concurrency:
 jobs:
   tests-gradle:
     if: "!startsWith(github.head_ref, 'release-')"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 #v4.2.1
@@ -42,7 +42,7 @@ jobs:
 
   tests-no-gradle:
     if: "!startsWith(github.head_ref, 'release-')"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 #v4.2.1
@@ -66,7 +66,7 @@ jobs:
 
   tests-integration:
     if: "!startsWith(github.head_ref, 'release-')"
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 #v4.2.1
@@ -88,7 +88,7 @@ jobs:
           name: tests-integration.zip
           path: diagnostics.zip
   ios-tests:
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 #v4.2.1
diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 3b8c72c7952..d1b781c26bf 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -14,7 +14,7 @@ on:
         type: string
 jobs:
   preview:
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 #v4.2.1
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 38f618dedfe..42fb68d9836 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -11,7 +11,7 @@ env:
 
 jobs:
   deploy:
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
index 9674ae5a978..efc5f4e787d 100644
--- a/.github/workflows/tag.yml
+++ b/.github/workflows/tag.yml
@@ -10,7 +10,7 @@ env:
 jobs:
   publish-libraries:
     name: Publish libraries
-    runs-on: macos-14
+    runs-on: macos-15
     if: github.repository == 'apollographql/apollo-kotlin'
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 #v4.1.7
diff --git a/build-logic/src/main/kotlin/CompilerOptions.kt b/build-logic/src/main/kotlin/CompilerOptions.kt
index ace02255166..45f444c5b5e 100644
--- a/build-logic/src/main/kotlin/CompilerOptions.kt
+++ b/build-logic/src/main/kotlin/CompilerOptions.kt
@@ -1,14 +1,11 @@
+
 import com.android.build.gradle.BaseExtension
 import compat.patrouille.configureJavaCompatibility
 import compat.patrouille.configureKotlinCompatibility
-import org.gradle.api.JavaVersion
 import org.gradle.api.Project
-import org.gradle.api.plugins.JavaPluginExtension
-import org.gradle.api.tasks.compile.JavaCompile
 import org.gradle.api.tasks.testing.Test
 import org.gradle.jvm.toolchain.JavaLanguageVersion
 import org.gradle.jvm.toolchain.JavaToolchainService
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import org.jetbrains.kotlin.gradle.dsl.KotlinAndroidProjectExtension
 import org.jetbrains.kotlin.gradle.dsl.KotlinCommonCompilerOptions
 import org.jetbrains.kotlin.gradle.dsl.KotlinJsCompilerOptions
@@ -28,6 +25,9 @@ fun KotlinCommonCompilerOptions.configure(
 ) {
   freeCompilerArgs.add("-Xexpect-actual-classes")
 
+  // Suppress "Language version 1.9 is deprecated and its support will be removed in a future version of Kotlin"
+  freeCompilerArgs.add("-Xsuppress-version-warnings")
+
   optIns.forEach {
     freeCompilerArgs.add("-opt-in=$it")
   }
diff --git a/gradle/libraries.toml b/gradle/libraries.toml
index c11d1a3a2a3..cd83d4e883d 100644
--- a/gradle/libraries.toml
+++ b/gradle/libraries.toml
@@ -28,12 +28,12 @@ javaPoet = "1.13.0"
 jetbrains-annotations = "24.0.1"
 junit = "4.13.2"
 kotlin-plugin-min = "1.9.0"
-kotlin-plugin = "2.1.20"
-kotlin-plugin-max = "2.1.20"
+kotlin-plugin = "2.2.0-dev-16956"
+kotlin-plugin-max = "2.2.0-dev-16956"
 kotlinx-coroutines = "1.9.0"
 kotlinx-datetime = "0.5.0"
 kotlinx-serialization-runtime = "1.6.2"
-ksp = "2.1.20-2.0.0"
+ksp = "2.2.0-Beta2-2.0.1"
 ktor = "3.1.2"
 moshix = "0.14.1"
 node-fetch = "2.7.0"
diff --git a/gradle/repositories.gradle.kts b/gradle/repositories.gradle.kts
index a4a7a03407c..453d12721f2 100644
--- a/gradle/repositories.gradle.kts
+++ b/gradle/repositories.gradle.kts
@@ -1,9 +1,9 @@
 listOf(pluginManagement.repositories, dependencyResolutionManagement.repositories).forEach {
   it.apply {
     // Uncomment this one to use the Kotlin "dev" repository
-    // maven("https://redirector.kotlinlang.org/maven/dev/")
+    maven("https://redirector.kotlinlang.org/maven/dev/")
     // Uncomment this one to use the Sonatype OSSRH snapshots repository
-    // maven("https://oss.sonatype.org/content/repositories/snapshots/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots/")
     // Uncomment this one to use the GradleUp repository
     // maven("https://storage.googleapis.com/gradleup/m2")
 
diff --git a/intellij-plugin/build.gradle.kts b/intellij-plugin/build.gradle.kts
index 81792ea2d96..13b5601d3c2 100644
--- a/intellij-plugin/build.gradle.kts
+++ b/intellij-plugin/build.gradle.kts
@@ -28,9 +28,9 @@ commonSetup()
 // XXX: this should use the settings repositories instead
 repositories {
   // Uncomment this one to use the Kotlin "dev" repository
-  // maven("https://redirector.kotlinlang.org/maven/dev/")
+  maven("https://redirector.kotlinlang.org/maven/dev/")
   // Uncomment this one to use the Sonatype OSSRH snapshots repository
-  // maven("https://oss.sonatype.org/content/repositories/snapshots/")
+  maven("https://oss.sonatype.org/content/repositories/snapshots/")
   mavenCentral()
 
   intellijPlatform {
diff --git a/libraries/apollo-gradle-plugin/testProjects/gradle-min-version/build.gradle.kts b/libraries/apollo-gradle-plugin/testProjects/gradle-min-version/build.gradle.kts
index 3d7834eaa14..9be6872c1c6 100644
--- a/libraries/apollo-gradle-plugin/testProjects/gradle-min-version/build.gradle.kts
+++ b/libraries/apollo-gradle-plugin/testProjects/gradle-min-version/build.gradle.kts
@@ -23,7 +23,7 @@ repositories {
   }
   mavenCentral()
   // Uncomment this one to use the Kotlin "dev" repository
-  // maven("https://redirector.kotlinlang.org/maven/dev/")
+  maven("https://redirector.kotlinlang.org/maven/dev/")
 }
 
 configure<ApolloExtension> {
diff --git a/libraries/apollo-runtime/src/appleMain/kotlin/com/apollographql/apollo/network/NetworkObserver.apple.kt b/libraries/apollo-runtime/src/appleMain/kotlin/com/apollographql/apollo/network/NetworkObserver.apple.kt
index 7f2b7b1804b..573348586c7 100644
--- a/libraries/apollo-runtime/src/appleMain/kotlin/com/apollographql/apollo/network/NetworkObserver.apple.kt
+++ b/libraries/apollo-runtime/src/appleMain/kotlin/com/apollographql/apollo/network/NetworkObserver.apple.kt
@@ -7,12 +7,11 @@ import platform.Network.nw_path_monitor_set_queue
 import platform.Network.nw_path_monitor_set_update_handler
 import platform.Network.nw_path_monitor_start
 import platform.Network.nw_path_monitor_t
-import platform.Network.nw_path_monitor_update_handler_t
 import platform.Network.nw_path_status_satisfied
 import platform.Network.nw_path_t
 import platform.darwin.dispatch_queue_create
 
-internal class AppleNetworkObserver: NetworkObserver, nw_path_monitor_update_handler_t {
+internal class AppleNetworkObserver: NetworkObserver, ((nw_path_t) -> Unit) {
   var monitor: nw_path_monitor_t = null
   var listener: NetworkObserver.Listener? = null
 
@@ -36,4 +35,4 @@ internal class AppleNetworkObserver: NetworkObserver, nw_path_monitor_update_han
   override fun invoke(p1: nw_path_t) {
     listener?.networkChanged((nw_path_get_status(p1) == nw_path_status_satisfied))
   }
-}
\ No newline at end of file
+}
diff --git a/tests/enums/build.gradle.kts b/tests/enums/build.gradle.kts
index b9a72d7523a..50060248034 100644
--- a/tests/enums/build.gradle.kts
+++ b/tests/enums/build.gradle.kts
@@ -47,5 +47,8 @@ tasks.withType(KotlinCompilationTask::class.java).configureEach {
   compilerOptions {
     apiVersion.set(KotlinVersion.KOTLIN_1_9)
     languageVersion.set(KotlinVersion.KOTLIN_1_9)
+
+    // Suppress "Language version 1.9 is deprecated and its support will be removed in a future version of Kotlin"
+    freeCompilerArgs.add("-Xsuppress-version-warnings")
   }
 }
diff --git a/tests/jsexport/src/jsTest/kotlin/JsExportTest.js.kt b/tests/jsexport/src/jsTest/kotlin/JsExportTest.js.kt
index 87dfb31a474..a030d2236fa 100644
--- a/tests/jsexport/src/jsTest/kotlin/JsExportTest.js.kt
+++ b/tests/jsexport/src/jsTest/kotlin/JsExportTest.js.kt
@@ -23,9 +23,9 @@ actual val parserFactory: SubscriptionParserFactory?
 object JsSubscriptionParserFactory : SubscriptionParserFactory {
   override fun <D : Operation.Data> createParser(request: ApolloRequest<D>): SubscriptionParser<D> {
     return object : SubscriptionParser<D> {
-      override fun parse(payload: ApolloJsonElement): ApolloResponse<D> {
+      override fun parse(response: ApolloJsonElement): ApolloResponse<D> {
         return ApolloResponse.Builder(request.operation, request.requestUuid)
-            .data(payload.asDynamic().data.unsafeCast<D>())
+            .data(response.asDynamic().data.unsafeCast<D>())
             .errors(null) // TODO: Error doesn't use @JsExport
             .build()
       }
@@ -87,4 +87,4 @@ object JsWsProtocol : WsProtocol {
       else -> ParseErrorServerMessage("Unknown type: '$type' found in server message: '$text'")
     }
   }
-}
\ No newline at end of file
+}