diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5c95c20..a2518490 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog #
 
+## v0.8.1 *(2021-09-23)* ##
+
+- Update to Kotlin 1.5.31 and Gradle 7.2
+- Update `multiplatform-settings-coroutines` to use coroutines version 1.5.2
+- Update `multiplatform-settings-serialization` to use serialization version 1.3.0-RC
+- Add missing Apple targets to `multiplatform-settings-coroutines`, `multiplatform-settings-serialization`,
+  and `multiplatform-settings-no-arg`
+
 ## v0.8 *(2021-08-27)* ##
 
 - Update to Kotlin 1.5.30 and Gradle 7.1
diff --git a/README.md b/README.md
index 1d0c3e06..56ca361e 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ Then, simply add the dependency to your common source-set dependencies
 commonMain {
     dependencies {
         // ...
-        implementation("com.russhwolf:multiplatform-settings:0.8")
+        implementation("com.russhwolf:multiplatform-settings:0.8.1")
     }
 }
 ``` 
@@ -144,7 +144,7 @@ val factory: Settings.Factory = AppleSettings.Factory()
 To create a `Settings` instance from common without needing to pass platform-specific dependencies, add the `multiplatform-settings-no-arg` gradle dependency. This exports `multiplatform-settings` as an API dependency, so you can use it as a replacement for that default dependency.
 
 ```kotlin
-implementation("com.russhwolf:multiplatform-settings-no-arg:0.8")
+implementation("com.russhwolf:multiplatform-settings-no-arg:0.8.1")
 ```
 
 Then from common code, you can write
@@ -238,7 +238,7 @@ Note that for the `AppleSettings` implementation, some entries are unremovable a
 A testing dependency is available to aid in testing code that interacts with this library.
 
 ```kotlin
-implementation("com.russhwolf:multiplatform-settings-test:0.8")
+implementation("com.russhwolf:multiplatform-settings-test:0.8.1")
 ```    
 
 This includes a `MockSettings` implementation of the `Settings` interface, which is backed by an in-memory `MutableMap` on all platforms.
@@ -309,7 +309,7 @@ On Apple platforms, the `AppleSettings` listeners are designed to work within th
 A `kotlinx-serialization` integration exists so it's easier to save non-primitive data
 
 ```kotlin
-implementation("com.russhwolf:multiplatform-settings-serialization:0.8")
+implementation("com.russhwolf:multiplatform-settings-serialization:0.8.1")
 ```
 
 This essentially uses the `Settings` store as a serialization format. Thus for a serializable class
@@ -346,10 +346,10 @@ Usage requires accepting both the `@ExperimentalSettingsApi` and `@ExperimentalS
 A separate `multiplatform-settings-coroutines` dependency includes various coroutine APIs.
 
 ```kotlin
-implementation("com.russhwolf:multiplatform-settings-coroutines:0.8")
+implementation("com.russhwolf:multiplatform-settings-coroutines:0.8.1")
 
 // Or, if you use native-mt coroutines release
-implementation("com.russhwolf:multiplatform-settings-coroutines-native-mt:0.8")
+implementation("com.russhwolf:multiplatform-settings-coroutines-native-mt:0.8.1")
 ```
 
 This adds flow extensions for all types which use the listener APIs internally.
@@ -389,7 +389,7 @@ val blockingSettings: Settings = suspendSettings.toBlockingSettings()
 An implementation of `FlowSettings` on the Android exists in the `multiplatform-settings-datastore` dependency, based on [Jetpack DataStore](https://developer.android.com/jetpack/androidx/releases/datastore)
 
 ```kotlin
-implementation("com.russhwolf:multiplatform-settings-datastore:0.8")
+implementation("com.russhwolf:multiplatform-settings-datastore:0.8.1")
 ```
 
 This provides a `DataStoreSettings` class
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index a297b88c..3b5ffd13 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -15,7 +15,7 @@
  */
 
 plugins {
-    kotlin("jvm") version "1.5.30"
+    kotlin("jvm") version "1.5.31"
 }
 
 repositories {
@@ -26,7 +26,7 @@ repositories {
 
 dependencies {
     implementation(kotlin("gradle-plugin"))
-    implementation("com.android.tools.build:gradle:4.1.2")
+    implementation("com.android.tools.build:gradle:4.2.2")
     implementation("org.jetbrains.dokka:dokka-gradle-plugin:0.10.1")
     implementation(kotlin("compiler-embeddable"))
 }
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index 28f421cd..8dc1c2fd 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -17,10 +17,10 @@
 @file:Suppress("KDocMissingDocumentation")
 
 object Versions {
-    const val multiplatformSettings = "0.8"
+    const val multiplatformSettings = "0.8.1"
 
     const val minSdk = 15
-    const val compileSdk = 30
+    const val compileSdk = 31
 
     const val androidxDatastore = "1.0.0"
     const val androidxPreference = "1.1.1"
@@ -28,11 +28,11 @@ object Versions {
     const val androidxTest = "1.4.0"
     const val androidxTestExt = "1.1.3"
     const val binaryCompatibilityValidator = "0.2.4"
-    const val coroutines = "1.5.1"
-    const val coroutinesNativeMt = "1.5.1-native-mt"
+    const val coroutines = "1.5.2"
+    const val coroutinesNativeMt = "1.5.2-native-mt"
     const val junit = "4.13.2"
     const val robolectric = "4.6.1"
-    const val serializationPlugin = "1.5.30"
-    const val serializationRuntime = "1.2.2"
-    const val turbine = "0.6.0"
+    const val serializationPlugin = "1.5.31"
+    const val serializationRuntime = "1.3.0-RC"
+    const val turbine = "0.6.1"
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 10e803bc..21deeefb 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -15,7 +15,7 @@
 #
 
 #Sun Jun 09 17:45:17 EDT 2019
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
diff --git a/multiplatform-settings-coroutines-native-mt/build.gradle.kts b/multiplatform-settings-coroutines-native-mt/build.gradle.kts
index 553a0a72..2965c2fa 100644
--- a/multiplatform-settings-coroutines-native-mt/build.gradle.kts
+++ b/multiplatform-settings-coroutines-native-mt/build.gradle.kts
@@ -28,16 +28,21 @@ standardConfiguration(
     "android",
     "iosArm32",
     "iosArm64",
+    "iosSimulatorArm64",
     "iosX64",
     "js",
     "jvm",
     "linuxX64",
+    "macosArm64",
     "macosX64",
     "mingwX64",
     "tvosArm64",
+    "tvosSimulatorArm64",
     "tvosX64",
     "watchosArm32",
     "watchosArm64",
+    "watchosSimulatorArm64",
+    "watchosX64",
     "watchosX86"
 )
 kotlin {
diff --git a/multiplatform-settings-coroutines/build.gradle.kts b/multiplatform-settings-coroutines/build.gradle.kts
index 4d84890e..9c0d1d9b 100644
--- a/multiplatform-settings-coroutines/build.gradle.kts
+++ b/multiplatform-settings-coroutines/build.gradle.kts
@@ -28,16 +28,21 @@ standardConfiguration(
     "android",
     "iosArm32",
     "iosArm64",
+    "iosSimulatorArm64",
     "iosX64",
     "js",
     "jvm",
     "linuxX64",
+    "macosArm64",
     "macosX64",
     "mingwX64",
     "tvosArm64",
+    "tvosSimulatorArm64",
     "tvosX64",
     "watchosArm32",
     "watchosArm64",
+    "watchosSimulatorArm64",
+    "watchosX64",
     "watchosX86"
 )
 kotlin {
diff --git a/multiplatform-settings-no-arg/build.gradle.kts b/multiplatform-settings-no-arg/build.gradle.kts
index 1ce01afb..0978849b 100644
--- a/multiplatform-settings-no-arg/build.gradle.kts
+++ b/multiplatform-settings-no-arg/build.gradle.kts
@@ -26,14 +26,19 @@ standardConfiguration(
     "android",
     "iosArm32",
     "iosArm64",
+    "iosSimulatorArm64",
     "iosX64",
     "js",
     "jvm",
+    "macosArm64",
     "macosX64",
     "tvosArm64",
+    "tvosSimulatorArm64",
     "tvosX64",
     "watchosArm32",
     "watchosArm64",
+    "watchosSimulatorArm64",
+    "watchosX64",
     "watchosX86"
 )
 
@@ -74,7 +79,7 @@ kotlin {
             }
         }
         val jvmTest by getting {
-            languageSettings.useExperimentalAnnotation("com.russhwolf.settings.ExperimentalSettingsImplementation")
+            languageSettings.optIn("com.russhwolf.settings.ExperimentalSettingsImplementation")
             dependencies {
                 implementation("junit:junit:${Versions.junit}")
             }
diff --git a/multiplatform-settings-serialization/build.gradle.kts b/multiplatform-settings-serialization/build.gradle.kts
index fe5ea7d2..bb20f40c 100644
--- a/multiplatform-settings-serialization/build.gradle.kts
+++ b/multiplatform-settings-serialization/build.gradle.kts
@@ -27,19 +27,24 @@ standardConfiguration(
     "android",
     "iosArm32",
     "iosArm64",
+    "iosSimulatorArm64",
     "iosX64",
     "js",
     "jvm",
     "linuxArm32Hfp",
     "linuxArm64",
     "linuxX64",
+    "macosArm64",
     "macosX64",
     "mingwX64",
     "mingwX86",
     "tvosArm64",
+    "tvosSimulatorArm64",
     "tvosX64",
     "watchosArm32",
     "watchosArm64",
+    "watchosSimulatorArm64",
+    "watchosX64",
     "watchosX86"
 )
 
diff --git a/sample/build.gradle.kts b/sample/build.gradle.kts
index ebbb88f2..d248959b 100644
--- a/sample/build.gradle.kts
+++ b/sample/build.gradle.kts
@@ -15,14 +15,14 @@
  */
 
 plugins {
-    kotlin("multiplatform") version "1.5.30" apply false
-    kotlin("android") version "1.5.30" apply false
-    id("com.android.library") version "4.1.2" apply false
-    id("com.android.application") version "4.1.2" apply false
+    kotlin("multiplatform") version "1.5.31" apply false
+    kotlin("android") version "1.5.31" apply false
+    id("com.android.library") version "4.2.2" apply false
+    id("com.android.application") version "4.2.2" apply false
 }
 
 allprojects {
-    ext["library_version"] = "0.8"
+    ext["library_version"] = "0.8.1"
 
     repositories {
         mavenLocal()
diff --git a/sample/gradle/wrapper/gradle-wrapper.properties b/sample/gradle/wrapper/gradle-wrapper.properties
index 9ed03e93..02183d94 100644
--- a/sample/gradle/wrapper/gradle-wrapper.properties
+++ b/sample/gradle/wrapper/gradle-wrapper.properties
@@ -19,4 +19,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip
diff --git a/sample/shared/build.gradle.kts b/sample/shared/build.gradle.kts
index cdee2465..edea9ff8 100644
--- a/sample/shared/build.gradle.kts
+++ b/sample/shared/build.gradle.kts
@@ -41,7 +41,7 @@ kotlin {
     sourceSets {
         all {
             languageSettings.apply {
-                useExperimentalAnnotation("kotlin.RequiresOptIn")
+                optIn("kotlin.RequiresOptIn")
             }
         }