diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a5bfdc1a9..e0ae15d91 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -14,10 +14,11 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: 1.8
+          distribution: 'zulu'
+          java-version: '11'
       - name: Setup versions
         uses: eskatos/gradle-command-action@v1
         with:
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 99cda9530..107872fe7 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -13,48 +13,49 @@ jobs:
     runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Grant execute permission for gradlew
-      run: chmod +x gradlew
-    - name: Install Carthage
-      run: brew list carthage || brew install carthage
-    - name: Install Firebase tools
-      run: npm install -g firebase-tools
-    - name: Start Firebase emulator
-      run: "firebase emulators:start --config=./test/firebase.json &"
-    - name: Assemble
-      run: ./gradlew assemble
-    - name: Run JS Tests
-      run: ./gradlew cleanTest jsTest
-    - name: Upload JS test artifact
-      uses: actions/upload-artifact@v2
-      if: failure()
-      with:
-        name: "JS Test Report HTML"
-        path: "firebase-firestore/build/reports/tests/jsTest/"
-    - name: Run iOS Tests
-      run: ./gradlew cleanTest iosX64Test
-    - name: Upload iOS test artifact
-      uses: actions/upload-artifact@v2
-      if: failure()
-      with:
-        name: "iOS Test Report HTML"
-        path: "firebase-firestore/build/reports/tests/iosTest/"
-    - name: Run Android Instrumented Tests
-      uses: reactivecircus/android-emulator-runner@v2
-      with:
-        api-level: 29
-        target: google_apis
-        arch: x86_64
-        profile: Nexus 6
-        script: ./gradlew connectedAndroidTest
-    - name: Upload Android test artifact
-      uses: actions/upload-artifact@v2
-      if: failure()
-      with:
-        name: "Android Test Report HTML"
-        path: "firebase-firestore/build/reports/tests/androidTests/"
+      - uses: actions/checkout@v2
+      - name: Set up JDK
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'zulu'
+          java-version: '11'
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Install Carthage
+        run: brew list carthage || brew install carthage
+      - name: Install Firebase tools
+        run: npm install -g firebase-tools
+      - name: Start Firebase emulator
+        run: "firebase emulators:start --config=./test/firebase.json &"
+      - name: Assemble
+        run: ./gradlew assemble
+      - name: Run JS Tests
+        run: ./gradlew cleanTest jsTest
+      - name: Upload JS test artifact
+        uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: "JS Test Report HTML"
+          path: "firebase-firestore/build/reports/tests/jsTest/"
+      - name: Run iOS Tests
+        run: ./gradlew cleanTest iosX64Test
+      - name: Upload iOS test artifact
+        uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: "iOS Test Report HTML"
+          path: "firebase-firestore/build/reports/tests/iosTest/"
+      - name: Run Android Instrumented Tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          target: google_apis
+          arch: x86_64
+          profile: Nexus 6
+          script: ./gradlew connectedAndroidTest
+      - name: Upload Android test artifact
+        uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: "Android Test Report HTML"
+          path: "firebase-firestore/build/reports/tests/androidTests/"
diff --git a/build.gradle.kts b/build.gradle.kts
index aaf02a055..bf5a782b3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -4,7 +4,7 @@ import org.gradle.api.tasks.testing.logging.TestExceptionFormat
 import org.gradle.api.tasks.testing.logging.TestLogEvent
 
 plugins {
-    kotlin("multiplatform") version "1.5.10" apply false
+    kotlin("multiplatform") version "1.5.21" apply false
     id("base")
 }
 
@@ -18,7 +18,7 @@ buildscript {
         }
     }
     dependencies {
-        classpath("com.android.tools.build:gradle:4.2.1")
+        classpath("com.android.tools.build:gradle:7.0.0")
         classpath("com.adarshr:gradle-test-logger-plugin:2.1.1")
     }
 }
@@ -207,19 +207,18 @@ subprojects {
         }
 
         dependencies {
-            "commonMainImplementation"(kotlin("stdlib-common"))
-            "commonMainImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.0")
-            "jsMainImplementation"(kotlin("stdlib-js"))
-            "androidMainImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-play-services:1.5.0")
+            "commonMainImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1")
+            "androidMainImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-play-services:1.5.1")
+            "androidMainImplementation"(platform("com.google.firebase:firebase-bom:28.3.1"))
             "commonTestImplementation"(kotlin("test-common"))
             "commonTestImplementation"(kotlin("test-annotations-common"))
-            "commonTestImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.0")
+            "commonTestImplementation"("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.1")
             "jsTestImplementation"(kotlin("test-js"))
             "androidAndroidTestImplementation"(kotlin("test-junit"))
             "androidAndroidTestImplementation"("junit:junit:4.13.2")
-            "androidAndroidTestImplementation"("androidx.test:core:1.3.0")
-            "androidAndroidTestImplementation"("androidx.test.ext:junit:1.1.2")
-            "androidAndroidTestImplementation"("androidx.test:runner:1.3.0")
+            "androidAndroidTestImplementation"("androidx.test:core:1.4.0")
+            "androidAndroidTestImplementation"("androidx.test.ext:junit:1.1.3")
+            "androidAndroidTestImplementation"("androidx.test:runner:1.4.0")
         }
     }
 
diff --git a/firebase-app/build.gradle.kts b/firebase-app/build.gradle.kts
index 9bf98a6a7..b9bbd9f7c 100644
--- a/firebase-app/build.gradle.kts
+++ b/firebase-app/build.gradle.kts
@@ -18,10 +18,10 @@ repositories {
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
     sourceSets {
@@ -35,11 +35,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -127,7 +127,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-common:20.0.0")
+                api("com.google.firebase:firebase-common-ktx")
             }
         }
 
diff --git a/firebase-app/package.json b/firebase-app/package.json
index 95feb0407..cd1916bca 100644
--- a/firebase-app/package.json
+++ b/firebase-app/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-common": "1.4.1",
-    "firebase": "8.6.7",
-    "kotlin": "1.5.10",
-    "kotlinx-coroutines-core": "1.5.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-app/src/nativeInterop/cinterop/Cartfile b/firebase-app/src/nativeInterop/cinterop/Cartfile
index 6ebb8fc11..e0f994544 100644
--- a/firebase-app/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-app/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAnalyticsBinary.json" == 8.2.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAnalyticsBinary.json" == 8.5.0
diff --git a/firebase-auth/build.gradle.kts b/firebase-auth/build.gradle.kts
index bdc6f93e0..51bff83d9 100644
--- a/firebase-auth/build.gradle.kts
+++ b/firebase-auth/build.gradle.kts
@@ -24,10 +24,10 @@ plugins {
 //}
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
     sourceSets {
@@ -45,11 +45,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -161,7 +161,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-auth:21.0.1")
+                api("com.google.firebase:firebase-auth-ktx")
             }
         }
 
diff --git a/firebase-auth/package.json b/firebase-auth/package.json
index c4db648ac..393cdbfbb 100644
--- a/firebase-auth/package.json
+++ b/firebase-auth/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-app": "1.4.1",
-    "firebase": "8.6.7",
-    "kotlin": "1.5.10",
-    "kotlinx-coroutines-core": "1.5.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-auth/src/jsMain/kotlin/dev/gitlive/firebase/auth/auth.kt b/firebase-auth/src/jsMain/kotlin/dev/gitlive/firebase/auth/auth.kt
index 8f270e351..50f97e2c4 100644
--- a/firebase-auth/src/jsMain/kotlin/dev/gitlive/firebase/auth/auth.kt
+++ b/firebase-auth/src/jsMain/kotlin/dev/gitlive/firebase/auth/auth.kt
@@ -148,7 +148,7 @@ private inline fun <R> rethrow(function: () -> R): R {
     }
 }
 
-private fun errorToException(cause: dynamic) = when(val code = cause.code?.toString()?.toLowerCase()) {
+private fun errorToException(cause: dynamic) = when(val code = cause.code?.toString()?.lowercase()) {
     "auth/invalid-user-token" -> FirebaseAuthInvalidUserException(code, cause)
     "auth/requires-recent-login" -> FirebaseAuthRecentLoginRequiredException(code, cause)
     "auth/user-disabled" -> FirebaseAuthInvalidUserException(code, cause)
diff --git a/firebase-auth/src/nativeInterop/cinterop/Cartfile b/firebase-auth/src/nativeInterop/cinterop/Cartfile
index fd7c50e01..c87f8aa12 100644
--- a/firebase-auth/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-auth/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAuthBinary.json" == 8.2.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAuthBinary.json" == 8.5.0
diff --git a/firebase-common/build.gradle.kts b/firebase-common/build.gradle.kts
index 0d7357e6d..3a2f2282d 100644
--- a/firebase-common/build.gradle.kts
+++ b/firebase-common/build.gradle.kts
@@ -9,14 +9,14 @@ version = project.property("firebase-common.version") as String
 plugins {
     id("com.android.library")
     kotlin("multiplatform")
-    kotlin("plugin.serialization") version "1.5.10"
+    kotlin("plugin.serialization") version "1.5.21"
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
     sourceSets {
@@ -31,11 +31,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -89,13 +89,13 @@ kotlin {
 
         val commonMain by getting {
             dependencies {
-                api("org.jetbrains.kotlinx:kotlinx-serialization-core:1.2.0")
+                api("org.jetbrains.kotlinx:kotlinx-serialization-core:1.2.2")
             }
         }
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-common:20.0.0")
+                api("com.google.firebase:firebase-common-ktx")
             }
         }
 
@@ -103,7 +103,7 @@ kotlin {
 
         val jsMain by getting {
             dependencies {
-                api(npm("firebase", "8.2.0"))
+                api(npm("firebase", "8.7.1"))
             }
         }
     }
diff --git a/firebase-common/package.json b/firebase-common/package.json
index 27d604740..885ace498 100644
--- a/firebase-common/package.json
+++ b/firebase-common/package.json
@@ -23,9 +23,9 @@
   },
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-multiplatform-sdk",
   "dependencies": {
-    "firebase": "8.6.7",
-    "kotlin": "1.5.10",
-    "kotlinx-coroutines-core": "1.5.0",
-    "kotlinx-serialization-kotlinx-serialization-runtime": "1.2.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1",
+    "kotlinx-serialization-kotlinx-serialization-runtime": "1.2.2"
   }
 }
diff --git a/firebase-config/build.gradle.kts b/firebase-config/build.gradle.kts
index 9ce949fb7..117069ab5 100644
--- a/firebase-config/build.gradle.kts
+++ b/firebase-config/build.gradle.kts
@@ -13,10 +13,10 @@ plugins {
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
     sourceSets {
@@ -33,11 +33,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -122,8 +122,8 @@ kotlin {
     sourceSets {
         all {
             languageSettings.apply {
-                apiVersion = "1.4"
-                languageVersion = "1.4"
+                apiVersion = "1.5"
+                languageVersion = "1.5"
                 progressiveMode = true
                 useExperimentalAnnotation("kotlinx.coroutines.ExperimentalCoroutinesApi")
             }
@@ -138,7 +138,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-config-ktx:21.0.0")
+                api("com.google.firebase:firebase-config-ktx")
             }
         }
 
diff --git a/firebase-config/package.json b/firebase-config/package.json
index aed5b331a..ed179cfcb 100644
--- a/firebase-config/package.json
+++ b/firebase-config/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-app": "1.4.1",
-    "firebase": "8.5.0",
-    "kotlin": "1.4.31",
-    "kotlinx-coroutines-core": "1.4.3"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-config/src/jsMain/kotlin/dev/gitlive/firebase/remoteconfig/FirebaseRemoteConfig.kt b/firebase-config/src/jsMain/kotlin/dev/gitlive/firebase/remoteconfig/FirebaseRemoteConfig.kt
index 92e4eaa6e..b1b19825f 100644
--- a/firebase-config/src/jsMain/kotlin/dev/gitlive/firebase/remoteconfig/FirebaseRemoteConfig.kt
+++ b/firebase-config/src/jsMain/kotlin/dev/gitlive/firebase/remoteconfig/FirebaseRemoteConfig.kt
@@ -111,7 +111,7 @@ internal inline fun <R> rethrow(function: () -> R): R {
 
 internal fun errorToException(error: dynamic) = (error?.code ?: error?.message ?: "")
     .toString()
-    .toLowerCase()
+    .lowercase()
     .let { code ->
         when {
             else -> {
diff --git a/firebase-config/src/nativeInterop/cinterop/Cartfile b/firebase-config/src/nativeInterop/cinterop/Cartfile
index ee1f07083..525ebedd6 100644
--- a/firebase-config/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-config/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseRemoteConfigBinary.json" == 8.1.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseRemoteConfigBinary.json" == 8.5.0
diff --git a/firebase-database/build.gradle.kts b/firebase-database/build.gradle.kts
index 7567d35ef..bc10120a3 100644
--- a/firebase-database/build.gradle.kts
+++ b/firebase-database/build.gradle.kts
@@ -18,10 +18,10 @@ repositories {
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
     }
     sourceSets {
         getByName("main") {
@@ -34,11 +34,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -139,7 +139,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-database:20.0.0")
+                api("com.google.firebase:firebase-database-ktx")
             }
         }
 
diff --git a/firebase-database/package.json b/firebase-database/package.json
index 87d988d5a..c2eedf3cd 100644
--- a/firebase-database/package.json
+++ b/firebase-database/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-app": "1.4.1",
-    "firebase": "8.6.7",
-    "kotlin": "1.5.10",
-    "kotlinx-coroutines-core": "1.5.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-database/src/jsMain/kotlin/dev/gitlive/firebase/database/database.kt b/firebase-database/src/jsMain/kotlin/dev/gitlive/firebase/database/database.kt
index a4f9898b6..9fbc04bba 100644
--- a/firebase-database/src/jsMain/kotlin/dev/gitlive/firebase/database/database.kt
+++ b/firebase-database/src/jsMain/kotlin/dev/gitlive/firebase/database/database.kt
@@ -62,7 +62,7 @@ actual open class Query internal constructor(open val js: firebase.database.Quer
     actual fun childEvents(vararg types: ChildEvent.Type) = callbackFlow<ChildEvent> {
         val listeners = rethrow {
             types.map { type ->
-                "child_${type.name.toLowerCase()}".let { eventType ->
+                "child_${type.name.lowercase()}".let { eventType ->
                     eventType to js.on(
                         eventType,
                         { snapshot, previousChildName ->
diff --git a/firebase-database/src/nativeInterop/cinterop/Cartfile b/firebase-database/src/nativeInterop/cinterop/Cartfile
index 827161b83..3391e187f 100644
--- a/firebase-database/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-database/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseDatabaseBinary.json" == 8.2.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseDatabaseBinary.json" == 8.5.0
diff --git a/firebase-firestore/build.gradle.kts b/firebase-firestore/build.gradle.kts
index a3020d95c..bafa41f76 100644
--- a/firebase-firestore/build.gradle.kts
+++ b/firebase-firestore/build.gradle.kts
@@ -10,14 +10,14 @@ version = project.property("firebase-firestore.version") as String
 plugins {
     id("com.android.library")
     kotlin("multiplatform")
-    kotlin("plugin.serialization") version "1.5.10"
+    kotlin("plugin.serialization") version "1.5.21"
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled = true
     }
@@ -36,12 +36,12 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
-        pickFirst("androidsupportmultidexversion.txt")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
+        resources.pickFirsts.add("androidsupportmultidexversion.txt")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -145,7 +145,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-firestore:23.0.1")
+                api("com.google.firebase:firebase-firestore-ktx")
             }
         }
 
diff --git a/firebase-firestore/package.json b/firebase-firestore/package.json
index a682e1ffb..b06b89a2b 100644
--- a/firebase-firestore/package.json
+++ b/firebase-firestore/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-app": "1.4.1",
-    "firebase": "8.6.7",
-    "kotlin": "1.5.10",
-    "kotlinx-coroutines-core": "1.5.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt b/firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt
index e2f82294f..b72393afd 100644
--- a/firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt
+++ b/firebase-firestore/src/jsMain/kotlin/dev/gitlive/firebase/firestore/firestore.kt
@@ -478,7 +478,7 @@ inline fun <R> rethrow(function: () -> R): R {
 
 fun errorToException(e: dynamic) = (e?.code ?: e?.message ?: "")
     .toString()
-    .toLowerCase()
+    .lowercase()
     .let {
         when {
             "cancelled" in it -> FirebaseFirestoreException(e, FirestoreExceptionCode.CANCELLED)
diff --git a/firebase-firestore/src/nativeInterop/cinterop/Cartfile b/firebase-firestore/src/nativeInterop/cinterop/Cartfile
index f8ae9fc08..f8ef0e3ab 100644
--- a/firebase-firestore/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-firestore/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseFirestoreBinary.json" == 8.2.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseFirestoreBinary.json" == 8.5.0
diff --git a/firebase-functions/build.gradle.kts b/firebase-functions/build.gradle.kts
index 7287c2d93..5d4f7454a 100644
--- a/firebase-functions/build.gradle.kts
+++ b/firebase-functions/build.gradle.kts
@@ -13,10 +13,10 @@ plugins {
 }
 
 android {
-    compileSdkVersion(property("targetSdkVersion") as Int)
+    compileSdk = property("targetSdkVersion") as Int
     defaultConfig {
-        minSdkVersion(property("minSdkVersion") as Int)
-        targetSdkVersion(property("targetSdkVersion") as Int)
+        minSdk = property("minSdkVersion") as Int
+        targetSdk = property("targetSdkVersion") as Int
     }
     sourceSets {
         getByName("main") {
@@ -29,11 +29,11 @@ android {
         }
     }
     packagingOptions {
-        pickFirst("META-INF/kotlinx-serialization-core.kotlin_module")
-        pickFirst("META-INF/AL2.0")
-        pickFirst("META-INF/LGPL2.1")
+        resources.pickFirsts.add("META-INF/kotlinx-serialization-core.kotlin_module")
+        resources.pickFirsts.add("META-INF/AL2.0")
+        resources.pickFirsts.add("META-INF/LGPL2.1")
     }
-    lintOptions {
+    lint {
         isAbortOnError = false
     }
 }
@@ -133,7 +133,7 @@ kotlin {
 
         val androidMain by getting {
             dependencies {
-                api("com.google.firebase:firebase-functions:20.0.0")
+                api("com.google.firebase:firebase-functions-ktx")
             }
         }
 
diff --git a/firebase-functions/package.json b/firebase-functions/package.json
index 34169acdf..a2e96aec7 100644
--- a/firebase-functions/package.json
+++ b/firebase-functions/package.json
@@ -24,8 +24,8 @@
   "homepage": "https://github.com/GitLiveApp/firebase-kotlin-sdk",
   "dependencies": {
     "@gitlive/firebase-app": "1.4.1",
-    "firebase": "8.6.7",
-    "kotlin": "1.5.0",
-    "kotlinx-coroutines-core": "1.5.0"
+    "firebase": "8.8.1",
+    "kotlin": "1.5.21",
+    "kotlinx-coroutines-core": "1.5.1"
   }
 }
diff --git a/firebase-functions/src/nativeInterop/cinterop/Cartfile b/firebase-functions/src/nativeInterop/cinterop/Cartfile
index 4a1605b0c..75898582b 100644
--- a/firebase-functions/src/nativeInterop/cinterop/Cartfile
+++ b/firebase-functions/src/nativeInterop/cinterop/Cartfile
@@ -1 +1 @@
-binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseFunctionsBinary.json" == 8.2.0
+binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseFunctionsBinary.json" == 8.5.0
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a1e0e6cac..469b8ac11 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ 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-7.0.2-all.zip