diff --git a/build.gradle.kts b/build.gradle.kts
index bd38fc9de..30c3e2594 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -72,7 +72,7 @@ subprojects {
 
   // Only apply if the project has the kotlin plugin added:
   plugins.withType<KotlinPluginWrapper> {
-    tasks.withType<KotlinCompile> {
+    tasks.withType<KotlinCompile>().configureEach {
       kotlinOptions {
         jvmTarget = JavaVersion.VERSION_11.toString()
         freeCompilerArgs = listOf("-Xjvm-default=all-compatibility")
@@ -80,9 +80,9 @@ subprojects {
       // dependsOn("spotlessKotlinApply")
     }
 
-    tasks.withType<JavaCompile> {
-      sourceCompatibility = JavaVersion.VERSION_11.toString()
-      targetCompatibility = JavaVersion.VERSION_11.toString()
+    configure<JavaPluginExtension> {
+      sourceCompatibility = JavaVersion.VERSION_11
+      targetCompatibility = JavaVersion.VERSION_11
     }
 
     dependencies {
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
deleted file mode 100644
index 906ba90f7..000000000
--- a/buildSrc/build.gradle.kts
+++ /dev/null
@@ -1,7 +0,0 @@
-plugins {
-  kotlin("jvm") version "1.9.23"
-}
-
-repositories {
-  jcenter()
-}
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index d02755f40..fae7dfd8d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -45,7 +45,7 @@ moshiKotlin = { module = "com.squareup.moshi:moshi-kotlin", version = "1.15.2" }
 nettyBom = { module = "io.netty:netty-bom", version = "4.1.79.Final" }
 okio = { module = "com.squareup.okio:okio", version = "3.4.0" }
 okioFakefilesystem = { module = "com.squareup.okio:okio-fakefilesystem", version = "3.4.0" }
-shadowGradlePlugin = { module = "com.gradleup.shadow:shadow-gradle-plugin", version = "8.3.6" }
+shadowGradlePlugin = { module = "com.gradleup.shadow:shadow-gradle-plugin", version = "9.0.0-beta13" }
 slf4jApi = { module = "org.slf4j:slf4j-api", version = "2.0.17" } # for DynamoDBLocal
 sqlite4javaLinuxI386 = { module = "com.almworks.sqlite4java:libsqlite4java-linux-i386", version.ref = "sqlite4java" } # for DynamoDBLocal
 sqlite4javaLinuxAmd64 = { module = "com.almworks.sqlite4java:libsqlite4java-linux-amd64", version.ref = "sqlite4java" } # for DynamoDBLocal
diff --git a/tempest-dynamodb-local/build.gradle.kts b/tempest-dynamodb-local/build.gradle.kts
index 95daf70dc..195c311e4 100644
--- a/tempest-dynamodb-local/build.gradle.kts
+++ b/tempest-dynamodb-local/build.gradle.kts
@@ -57,23 +57,8 @@ tasks.shadowJar {
   }
 
   // Relocate packages to avoid conflicts.
-  listOf(
-    "com.amazon.dynamodb.grammar",
-    "com.amazon.ion",
-    "com.amazonaws.services.dynamodbv2.dataMembers",
-    "com.amazonaws.services.dynamodbv2.datamodel",
-    "com.amazonaws.services.dynamodbv2.dbenv",
-    "com.amazonaws.services.dynamodbv2.exceptions",
-    "com.amazonaws.services.dynamodbv2.local",
-    "com.amazonaws.services.dynamodbv2.parser",
-    "com.amazonaws.services.dynamodbv2.rr",
-    "com.fasterxml.jackson",
-    "ddb.partiql",
-    "kotlin",
-    "org.antlr",
-    "org.eclipse.jetty",
-    "org.partiql",
-  ).forEach { relocate(it, "app.cash.tempest.testing.dynamodb.local.shaded.${it}") }
+  enableRelocation = true
+  relocationPrefix = "app.cash.tempest.testing.dynamodb.local.shaded"
 
   mergeServiceFiles()