diff --git a/build.gradle b/build.gradle
index a1001ac..1372252 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,6 @@
 plugins {
     alias libs.plugins.androidApplication apply false
     alias libs.plugins.androidLibrary apply false
-    alias libs.plugins.kotlinAndroid apply false
     alias libs.plugins.composeCompiler apply false
     alias libs.plugins.dokka apply false
     alias libs.plugins.mavenPublish apply false
diff --git a/common.gradle b/common.gradle
index 8ac933f..663d010 100644
--- a/common.gradle
+++ b/common.gradle
@@ -19,10 +19,6 @@ android {
         }
     }
 
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-
     lint {
         abortOnError = true
         warningsAsErrors = true
diff --git a/dev-app/build.gradle b/dev-app/build.gradle
index 46f9f27..735d319 100644
--- a/dev-app/build.gradle
+++ b/dev-app/build.gradle
@@ -1,6 +1,5 @@
 plugins {
     alias libs.plugins.androidApplication
-    alias libs.plugins.kotlinAndroid
     alias libs.plugins.composeCompiler
 }
 
@@ -22,7 +21,7 @@ android {
             minifyEnabled = true
             proguardFiles = [
                 "okhttp3-proguard-rules.txt",
-                getDefaultProguardFile('proguard-android.txt')
+                getDefaultProguardFile('proguard-android-optimize.txt')
             ]
             signingConfig = signingConfigs.debug
         }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f5a1913..b349dbe 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "8.13.0"
+agp = "9.0.0"
 kotlin = "2.1.21"
 core-ktx = "1.16.0"
 junit = "4.13.2"
@@ -35,7 +35,6 @@ okhttp-core = { group = "com.squareup.okhttp3", name = "okhttp", version = "4.12
 # GMA / IMA
 gma-ads = { group = "com.google.android.gms", name = "play-services-ads", version.ref = "gma" }
 ima-ads = { group = "com.google.ads.interactivemedia.v3", name = "interactivemedia", version.ref = "ima" }
-androidx-multidex = { group = "androidx.multidex", name = "multidex", version = "2.0.1" }
 androidx-constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version = "2.2.1" }
 androidx-media = { group = "androidx.media", name = "media", version = "1.7.0" }
 androidx-browser = { group = "androidx.browser", name = "browser", version = "1.8.0" }
@@ -54,7 +53,6 @@ mockk-agent = { group = "io.mockk", name = "mockk-agent", version.ref = "mockkVe
 [plugins]
 androidApplication = { id = "com.android.application", version.ref = "agp" }
 androidLibrary = { id = "com.android.library", version.ref = "agp" }
-kotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 composeCompiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
 spotless = { id = "com.diffplug.spotless", version = "7.0.4" }
 dokka = { id = "org.jetbrains.dokka", version = "2.0.0" }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55..f8e1ee3 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index bad7c24..19a6bde 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 23d15a9..adff685 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
diff --git a/gradlew.bat b/gradlew.bat
index 5eed7ee..e509b2d 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -70,11 +70,10 @@ goto fail
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell
diff --git a/prebid/build.gradle b/prebid/build.gradle
index 4f52e52..af9acb3 100644
--- a/prebid/build.gradle
+++ b/prebid/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidLibrary
-    alias libs.plugins.kotlinAndroid
     alias libs.plugins.dokka
     alias libs.plugins.mavenPublish
 }
@@ -15,10 +16,10 @@ android {
 
     kotlin {
         explicitApi()
-    }
-
-    kotlinOptions {
-        freeCompilerArgs += [ "-opt-in=com.uid2.InternalUID2Api" ]
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+            optIn.add("com.uid2.InternalUID2Api")
+        }
     }
 }
 
diff --git a/sdk/build.gradle b/sdk/build.gradle
index f4657a0..c9931b2 100644
--- a/sdk/build.gradle
+++ b/sdk/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidLibrary
-    alias libs.plugins.kotlinAndroid
     alias libs.plugins.dokka
     alias libs.plugins.mavenPublish
 }
@@ -29,10 +30,10 @@ android {
 
     kotlin {
         explicitApi()
-    }
-
-    kotlinOptions {
-        freeCompilerArgs += [ "-opt-in=com.uid2.InternalUID2Api" ]
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+            optIn.add("com.uid2.InternalUID2Api")
+        }
     }
 }
 
diff --git a/securesignals-gma-dev-app/build.gradle b/securesignals-gma-dev-app/build.gradle
index 1a72d29..2c26d38 100644
--- a/securesignals-gma-dev-app/build.gradle
+++ b/securesignals-gma-dev-app/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidApplication
-    alias libs.plugins.kotlinAndroid
 }
 
 apply from:  rootProject.file("$rootDir/common.gradle")
@@ -22,6 +23,12 @@ android {
         }
     }
 
+    kotlin {
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+        }
+    }
+
     lint {
         disable 'GradleDependency'
     }
@@ -33,7 +40,6 @@ dependencies {
     implementation project(path: ':securesignals-gma')
     implementation(libs.gma.ads)
 
-    implementation(libs.androidx.multidex)
     implementation(libs.androidx.appcompat)
     implementation(libs.androidx.constraintlayout)
 }
diff --git a/securesignals-gma/build.gradle b/securesignals-gma/build.gradle
index 3de7a80..8322c7e 100644
--- a/securesignals-gma/build.gradle
+++ b/securesignals-gma/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidLibrary
-    alias libs.plugins.kotlinAndroid
     alias libs.plugins.mavenPublish
 }
 
@@ -21,6 +22,9 @@ android {
 
     kotlin {
         explicitApi()
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+        }
     }
 }
 
diff --git a/securesignals-ima-dev-app/build.gradle b/securesignals-ima-dev-app/build.gradle
index eaaf95d..86733ec 100644
--- a/securesignals-ima-dev-app/build.gradle
+++ b/securesignals-ima-dev-app/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidApplication
-    alias libs.plugins.kotlinAndroid
 }
 
 apply from:  rootProject.file("$rootDir/common.gradle")
@@ -22,6 +23,12 @@ android {
         }
     }
 
+    kotlin {
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+        }
+    }
+
     lint {
         disable 'GradleDependency', 'IconDipSize', 'IconDensities', 'RtlEnabled'
     }
@@ -38,7 +45,6 @@ dependencies {
     implementation(libs.androidx.activity.ktx)
     implementation(libs.androidx.constraintlayout)
 
-    implementation(libs.androidx.multidex)
     implementation(libs.androidx.browser)
     implementation(libs.androidx.media)
 }
diff --git a/securesignals-ima/build.gradle b/securesignals-ima/build.gradle
index c201329..bb1c6d5 100644
--- a/securesignals-ima/build.gradle
+++ b/securesignals-ima/build.gradle
@@ -1,6 +1,7 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias libs.plugins.androidLibrary
-    alias libs.plugins.kotlinAndroid
     alias libs.plugins.mavenPublish
 }
 
@@ -21,6 +22,9 @@ android {
 
     kotlin {
         explicitApi()
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_1_8
+        }
     }
 }