diff --git a/appcheck/firebase-appcheck/firebase-appcheck.gradle b/appcheck/firebase-appcheck/firebase-appcheck.gradle
index 8bb131495f3..0133ce3ae0a 100644
--- a/appcheck/firebase-appcheck/firebase-appcheck.gradle
+++ b/appcheck/firebase-appcheck/firebase-appcheck.gradle
@@ -70,7 +70,6 @@ dependencies {
     testImplementation libs.junit
     testImplementation libs.junit
     testImplementation libs.mockito.core
-    testImplementation libs.mockito.mockito.inline
     testImplementation libs.robolectric
 
     androidTestImplementation project(':appcheck:firebase-appcheck')
@@ -85,5 +84,4 @@ dependencies {
     androidTestImplementation libs.truth
     androidTestImplementation libs.junit
     androidTestImplementation libs.mockito.core
-    androidTestImplementation libs.mockito.mockito.inline
 }
diff --git a/firebase-appdistribution-api/firebase-appdistribution-api.gradle b/firebase-appdistribution-api/firebase-appdistribution-api.gradle
index ed9f7d9f63c..71416c85e58 100644
--- a/firebase-appdistribution-api/firebase-appdistribution-api.gradle
+++ b/firebase-appdistribution-api/firebase-appdistribution-api.gradle
@@ -69,7 +69,6 @@ dependencies {
     testImplementation libs.truth
     testImplementation libs.junit
     testImplementation libs.mockito.core
-    testImplementation libs.mockito.mockito.inline
     testImplementation libs.robolectric
 
     androidTestImplementation libs.androidx.test.core
diff --git a/firebase-appdistribution/firebase-appdistribution.gradle b/firebase-appdistribution/firebase-appdistribution.gradle
index 55a5a09884e..a6333aff391 100644
--- a/firebase-appdistribution/firebase-appdistribution.gradle
+++ b/firebase-appdistribution/firebase-appdistribution.gradle
@@ -98,7 +98,7 @@ dependencies {
     testImplementation libs.androidx.test.core
     testImplementation libs.truth
     testImplementation libs.junit
-    testImplementation libs.mockito.mockito.inline
+    testImplementation libs.mockito.core
     testImplementation libs.robolectric
 
     androidTestImplementation(project(":integ-testing")){
@@ -111,5 +111,4 @@ dependencies {
     androidTestImplementation libs.truth
     androidTestImplementation libs.junit
     androidTestImplementation libs.mockito.core
-    androidTestImplementation libs.mockito.mockito.inline
 }
diff --git a/firebase-installations/firebase-installations.gradle b/firebase-installations/firebase-installations.gradle
index 4765c720fc9..47d5ee852ea 100644
--- a/firebase-installations/firebase-installations.gradle
+++ b/firebase-installations/firebase-installations.gradle
@@ -73,7 +73,6 @@ dependencies {
     testImplementation libs.truth
     testImplementation libs.junit
     testImplementation libs.mockito.core
-    testImplementation libs.mockito.mockito.inline
     testImplementation libs.robolectric
 
     androidTestImplementation(project(":integ-testing")){
@@ -86,5 +85,4 @@ dependencies {
     androidTestImplementation libs.truth
     androidTestImplementation libs.junit
     androidTestImplementation libs.mockito.core
-    androidTestImplementation libs.mockito.mockito.inline
 }
diff --git a/firebase-messaging/firebase-messaging.gradle b/firebase-messaging/firebase-messaging.gradle
index f014b9eaa7c..4321ffc653d 100644
--- a/firebase-messaging/firebase-messaging.gradle
+++ b/firebase-messaging/firebase-messaging.gradle
@@ -155,5 +155,4 @@ dependencies {
         androidTestImplementation libs.truth
         androidTestImplementation libs.junit
         androidTestImplementation libs.mockito.core
-        androidTestImplementation libs.mockito.mockito.inline
 }
diff --git a/firebase-messaging/src/test/java/com/google/firebase/messaging/shadows/ShadowMessenger.java b/firebase-messaging/src/test/java/com/google/firebase/messaging/shadows/ShadowMessenger.java
index ef946522750..c3de6854ba9 100644
--- a/firebase-messaging/src/test/java/com/google/firebase/messaging/shadows/ShadowMessenger.java
+++ b/firebase-messaging/src/test/java/com/google/firebase/messaging/shadows/ShadowMessenger.java
@@ -13,13 +13,16 @@
 // limitations under the License.
 package com.google.firebase.messaging.shadows;
 
+import static org.robolectric.util.reflector.Reflector.reflector;
+
 import android.os.Message;
 import android.os.Messenger;
 import android.os.RemoteException;
 import org.robolectric.annotation.Implementation;
 import org.robolectric.annotation.Implements;
 import org.robolectric.annotation.RealObject;
-import org.robolectric.shadow.api.Shadow;
+import org.robolectric.util.reflector.Direct;
+import org.robolectric.util.reflector.ForType;
 
 @Implements(Messenger.class)
 public class ShadowMessenger {
@@ -28,12 +31,18 @@ public class ShadowMessenger {
 
   private static RemoteException sendException = null;
 
+  @ForType(Messenger.class)
+  interface MessengerReflector {
+    @Direct
+    void send(Messenger messenger, Message message) throws RemoteException;
+  }
+
   @Implementation
   protected void send(Message message) throws RemoteException {
     if (sendException != null) {
       throw sendException;
     } else {
-      Shadow.directlyOn(realMessenger, Messenger.class).send(message);
+      reflector(Messenger.class, realMessenger).send(message);
     }
   }
 
diff --git a/firebase-perf/firebase-perf.gradle b/firebase-perf/firebase-perf.gradle
index c0fd6df6056..4c49ed6aad6 100644
--- a/firebase-perf/firebase-perf.gradle
+++ b/firebase-perf/firebase-perf.gradle
@@ -136,6 +136,5 @@ dependencies {
     testImplementation libs.androidx.test.rules
     testImplementation libs.junit
     testImplementation libs.mockito.core
-    testImplementation libs.mockito.mockito.inline
     testImplementation group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.6'
 }
diff --git a/firebase-perf/src/main/java/com/google/firebase/perf/config/RemoteConfigManager.java b/firebase-perf/src/main/java/com/google/firebase/perf/config/RemoteConfigManager.java
index 36d8c272aef..8065997974d 100644
--- a/firebase-perf/src/main/java/com/google/firebase/perf/config/RemoteConfigManager.java
+++ b/firebase-perf/src/main/java/com/google/firebase/perf/config/RemoteConfigManager.java
@@ -363,7 +363,7 @@ private void triggerFirebaseRemoteConfigFetchAndActivateOnSuccessfulFetch() {
   @VisibleForTesting
   protected void syncConfigValues(Map<String, FirebaseRemoteConfigValue> newlyFetchedMap) {
     allRcConfigMap.putAll(newlyFetchedMap);
-    for (String existingKey : allRcConfigMap.keySet()) {
+    for (String existingKey : ((Map<String, FirebaseRemoteConfigValue>) allRcConfigMap).keySet()) {
       if (!newlyFetchedMap.containsKey(existingKey)) {
         allRcConfigMap.remove(existingKey);
       }
diff --git a/firebase-sessions/firebase-sessions.gradle.kts b/firebase-sessions/firebase-sessions.gradle.kts
index b136a281660..f912236f2f2 100644
--- a/firebase-sessions/firebase-sessions.gradle.kts
+++ b/firebase-sessions/firebase-sessions.gradle.kts
@@ -52,7 +52,10 @@ android {
     targetSdk = targetSdkVersion
     unitTests { isIncludeAndroidResources = true }
   }
-  lint { targetSdk = targetSdkVersion }
+  lint {
+    baseline = file("lint-baseline.xml")
+    targetSdk = targetSdkVersion
+  }
 }
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KaptGenerateStubs::class.java).configureEach {
diff --git a/firebase-sessions/lint-baseline.xml b/firebase-sessions/lint-baseline.xml
new file mode 100644
index 00000000000..ea2cac1e638
--- /dev/null
+++ b/firebase-sessions/lint-baseline.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<issues format="6" by="lint 8.6.1" type="baseline" client="gradle" dependencies="false" name="AGP (8.6.1)" variant="all" version="8.6.1">
+
+</issues>
diff --git a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/InstallationId.kt b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/InstallationId.kt
index 0df42fda953..b8c164c0355 100644
--- a/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/InstallationId.kt
+++ b/firebase-sessions/src/main/kotlin/com/google/firebase/sessions/InstallationId.kt
@@ -37,7 +37,7 @@ internal class InstallationId private constructor(val fid: String, val authToken
         }
       val fid: String =
         try {
-          firebaseInstallations.id.await()
+          firebaseInstallations.id.await() ?: ""
         } catch (ex: Exception) {
           Log.w(TAG, "Error getting Firebase installation id .", ex)
           ""
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 64682610bd7..bbcc56cf29c 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -17,8 +17,8 @@ cardview = "1.0.0"
 checkerQual = "2.5.2"
 constraintlayout = "2.1.4"
 coreKtx = "1.12.0"
-coroutines = "1.7.3"
-dagger = "2.43.2"
+coroutines = "1.9.0"
+dagger = "2.51"                 # Don't bump above 2.51 as it causes a bug in AppDistro FeedbackSender JPEG code
 datastore = "1.1.3"
 dexmaker = "2.28.1"
 dexmakerVersion = "1.2"
@@ -45,16 +45,16 @@ javalite = "3.25.5"
 jsonassert = "1.5.0"
 kotest = "5.9.0" # Do not use 5.9.1 because it reverts the fix for https://github.com/kotest/kotest/issues/3981
 kotestAssertionsCore = "5.8.1"
-kotlin = "1.8.22"
-ktorVersion = "2.3.2"
+kotlin = "2.0.21"
+ktorVersion = "3.0.3"
 legacySupportV4 = "1.0.0"
 lifecycleProcess = "2.3.1"
 material = "1.12.0"
 mavenResolverApi = "1.9.23"
 mavenResolverProvider = "3.9.9"
-mockito = "5.2.0"
+mockito = "5.16.0"
 mockitoAndroid = "3.4.0"
-mockk = "1.13.11"
+mockk = "1.14.0"                # Do not use 1.14.2 or above due to a bug in spyK and bumps kotlin to 2.1.x
 playServicesCloudMessaging = "17.2.0"
 playServicesStats = "17.0.2"
 playServicesVision = "20.1.3"
@@ -68,7 +68,7 @@ robolectric = "4.12"
 runner = "1.0.2"
 rxandroid = "2.0.2"
 rxjava = "2.1.14"
-serialization = "1.5.1"
+serialization = "1.7.3"
 slf4jNop = "2.0.9"
 spotless = "7.0.4"
 testServices = "1.2.0"
@@ -195,7 +195,6 @@ kotlin-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-te
 mockito-android = { module = "org.mockito:mockito-android", version.ref = "mockitoAndroid" }
 mockito-core = { module = "org.mockito:mockito-core", version.ref = "mockito" }
 mockito-dexmaker = { module = "com.linkedin.dexmaker:dexmaker-mockito", version = "2.28.3" }
-mockito-mockito-inline = { module = "org.mockito:mockito-inline", version.ref = "mockito" }
 mockk = { module = "io.mockk:mockk", version.ref = "mockk" }
 mockk-android = { module = "io.mockk:mockk-android", version.ref = "mockk" }
 protobuf-java-util = { module = "com.google.protobuf:protobuf-java-util", version.ref = "protobufjavautil" }
diff --git a/plugins/src/main/java/com/google/firebase/gradle/plugins/GradleExtensions.kt b/plugins/src/main/java/com/google/firebase/gradle/plugins/GradleExtensions.kt
index 88cd9927045..90d4e3fc50b 100644
--- a/plugins/src/main/java/com/google/firebase/gradle/plugins/GradleExtensions.kt
+++ b/plugins/src/main/java/com/google/firebase/gradle/plugins/GradleExtensions.kt
@@ -22,6 +22,8 @@ import java.io.BufferedOutputStream
 import java.io.File
 import java.util.zip.ZipEntry
 import java.util.zip.ZipOutputStream
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KProperty
 import org.gradle.api.DefaultTask
 import org.gradle.api.Project
 import org.gradle.api.Task
@@ -39,7 +41,6 @@ import org.gradle.kotlin.dsl.apply
 import org.gradle.workers.WorkAction
 import org.gradle.workers.WorkParameters
 import org.gradle.workers.WorkQueue
-import org.jetbrains.kotlin.gradle.utils.provider
 
 /**
  * Creates a file at the buildDir for the given [Project].
@@ -307,3 +308,15 @@ val Provider<Directory>.nestedFile: Provider<File>
  */
 val Directory.nestedFile: File
   get() = asFileTree.single { it.isFile }
+
+/**
+ * Creates a delegated provider.
+ *
+ * Useful to expose a provide via delegated properties. See [tempFile] for a reference usage.
+ */
+internal fun <T : Any> provider(provider: () -> T) =
+  object : ReadOnlyProperty<Any?, T> {
+    override operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
+      return provider()
+    }
+  }
diff --git a/plugins/src/main/java/com/google/firebase/gradle/plugins/ci/Coverage.java b/plugins/src/main/java/com/google/firebase/gradle/plugins/ci/Coverage.java
index a785420ab0f..e1ce2758093 100644
--- a/plugins/src/main/java/com/google/firebase/gradle/plugins/ci/Coverage.java
+++ b/plugins/src/main/java/com/google/firebase/gradle/plugins/ci/Coverage.java
@@ -36,7 +36,7 @@ public static void apply(FirebaseLibraryExtension firebaseLibrary) {
     File reportsDir = new File(project.getBuildDir(), "/reports/jacoco");
     JacocoPluginExtension jacoco = project.getExtensions().getByType(JacocoPluginExtension.class);
 
-    jacoco.setToolVersion("0.8.8");
+    jacoco.setToolVersion("0.8.13");
     jacoco.getReportsDirectory().set(reportsDir);
     project
         .getTasks()
diff --git a/smoke-tests/build.gradle b/smoke-tests/build.gradle
index 0df93b49a47..572c52cdff8 100644
--- a/smoke-tests/build.gradle
+++ b/smoke-tests/build.gradle
@@ -23,10 +23,10 @@ buildscript {
   }
 
   dependencies {
-    classpath "com.android.tools.build:gradle:8.3.2"
-    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.0"
-    classpath "com.google.gms:google-services:4.3.14"
-    classpath "com.google.firebase:firebase-crashlytics-gradle:2.8.1"
+    classpath "com.android.tools.build:gradle:8.6.1"
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.21"
+    classpath "com.google.gms:google-services:4.4.3"
+    classpath "com.google.firebase:firebase-crashlytics-gradle:3.0.4"
   }
 }
 
@@ -69,33 +69,33 @@ apply from: "configure.gradle"
 dependencies {
   implementation libs.androidx.test.core
   // Common utilities (application side)
-  implementation "androidx.test:rules:1.4.0"
-  implementation "androidx.test:runner:1.4.0"
+  implementation "androidx.test:rules:1.5.0"
+  implementation "androidx.test:runner:1.6.2"
   // Firebase
   implementation "com.google.firebase:firebase-analytics"
   implementation "com.google.firebase:firebase-annotations"
-  implementation "com.google.firebase:firebase-appdistribution:16.0.0-beta03"
-  implementation "com.google.firebase:firebase-appdistribution-api:16.0.0-beta03"
+  implementation "com.google.firebase:firebase-appdistribution:16.0.0-beta15"
+  implementation "com.google.firebase:firebase-appdistribution-api:16.0.0-beta15"
   implementation "com.google.firebase:firebase-auth"
   implementation "com.google.firebase:firebase-common"
   implementation "com.google.firebase:firebase-config"
-  implementation "com.google.firebase:firebase-crashlytics:18.6.4"
+  implementation "com.google.firebase:firebase-crashlytics:19.4.4"
   implementation "com.google.firebase:firebase-database"
   implementation "com.google.firebase:firebase-firestore"
   implementation "com.google.firebase:firebase-functions"
   // TODO(yifany): remove after the issue is fixed
   // https://github.com/firebase/firebase-android-sdk/issues/4206
-  implementation "com.google.firebase:firebase-iid:21.1.0"
+  implementation "com.google.firebase:firebase-iid"
   implementation "com.google.firebase:firebase-inappmessaging"
   implementation "com.google.firebase:firebase-messaging"
-  implementation "com.google.firebase:firebase-ml-modeldownloader:24.2.3"
+  implementation "com.google.firebase:firebase-ml-modeldownloader:25.0.1"
   implementation "com.google.firebase:firebase-perf"
   implementation "com.google.firebase:firebase-storage"
-  implementation "com.google.truth:truth:1.0.1"
+  implementation "com.google.truth:truth:1.4.4"
   implementation libs.junit
 
   // Common utilities (instrumentation side)
-  androidTestImplementation "androidx.test:runner:1.4.0"
+  androidTestImplementation "androidx.test:runner:1.6.2"
   androidTestImplementation libs.junit
 
   // Desugaring library
diff --git a/smoke-tests/configure.gradle b/smoke-tests/configure.gradle
index 65e5aac2690..44fee11f4f8 100644
--- a/smoke-tests/configure.gradle
+++ b/smoke-tests/configure.gradle
@@ -14,7 +14,7 @@
 
 
 def configurePlatform() {
-  def bom = "com.google.firebase:firebase-bom:20.0.0"
+  def bom = "com.google.firebase:firebase-bom:33.16.0"
   if (project.hasProperty("firebase-bom")) {
     bom = project.getProperty("firebase-bom")
   }
diff --git a/smoke-tests/gradle.properties b/smoke-tests/gradle.properties
index 372e31337a0..21666b332ee 100644
--- a/smoke-tests/gradle.properties
+++ b/smoke-tests/gradle.properties
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-android.enableR8=true
 android.useAndroidX=true
 
 org.gradle.jvmargs=-Xmx8g
diff --git a/tools/lint/src/test/kotlin/FirebaseAppGetDetectorTests.kt b/tools/lint/src/test/kotlin/FirebaseAppGetDetectorTests.kt
index 535c9c2befa..48c1f958d81 100644
--- a/tools/lint/src/test/kotlin/FirebaseAppGetDetectorTests.kt
+++ b/tools/lint/src/test/kotlin/FirebaseAppGetDetectorTests.kt
@@ -120,7 +120,7 @@ class FirebaseAppGetDetectorTests : LintDetectorTest() {
                 val instance = FirebaseApp.getInstance().get(Foo::class.java)
 
                 @JvmStatic
-                fun getInstance(app: FirebaseApp) = app.get(Foo::class.java)
+                fun getInstance(app: FirebaseApp): Foo = app.get(Foo::class.java)
               }
             }
         """
@@ -145,7 +145,7 @@ class FirebaseAppGetDetectorTests : LintDetectorTest() {
                 val instance = FirebaseApp.getInstance().get(FooImpl::class.java)
 
                 @JvmStatic
-                fun getInstance(app: FirebaseApp) = app.get(FooImpl::class.java)
+                fun getInstance(app: FirebaseApp): Foo = app.get(FooImpl::class.java)
               }
             }
             class FooImpl : Foo()