diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
index 08b1c2c..2f76476 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
@@ -174,8 +174,7 @@ internal abstract class AnalyzeArtifactSizeMetrics : DefaultTask() {
         if (artifactOrdinaryChange) appendLine(ordinary)
     }
 
-    private fun ArtifactSizeMetric.requiresAttention() =
-        this.percentage > pluginConfig.significantChangeThresholdPercentage || this.percentage.isNaN()
+    private fun ArtifactSizeMetric.requiresAttention() = this.percentage > pluginConfig.significantChangeThresholdPercentage || this.percentage.isNaN()
 
     private data class ArtifactSizeMetric(
         val currentSize: Long,
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/ArtifactSizeMetricsPlugin.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/ArtifactSizeMetricsPlugin.kt
index ef57212..b4ea5bf 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/ArtifactSizeMetricsPlugin.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/ArtifactSizeMetricsPlugin.kt
@@ -38,12 +38,11 @@ class ArtifactSizeMetricsPlugin : Plugin<Project> {
     }
 }
 
-private fun Project.subprojectArtifactSizeMetricsTask(): TaskProvider<CollectArtifactSizeMetrics> =
-    tasks.register<CollectArtifactSizeMetrics>("artifactSizeMetrics") {
-        group = TASK_GROUP
-        onlyIf { tasks.findByName("jvmJar") != null }
-        dependsOn(tasks.withType<Jar>())
-    }
+private fun Project.subprojectArtifactSizeMetricsTask(): TaskProvider<CollectArtifactSizeMetrics> = tasks.register<CollectArtifactSizeMetrics>("artifactSizeMetrics") {
+    group = TASK_GROUP
+    onlyIf { tasks.findByName("jvmJar") != null }
+    dependsOn(tasks.withType<Jar>())
+}
 
 private fun Project.registerRootProjectArtifactSizeMetricsTask(
     subProjects: List<TaskProvider<CollectArtifactSizeMetrics>>,
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/CollectDelegatedArtifactSizeMetrics.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/CollectDelegatedArtifactSizeMetrics.kt
index aa25a11..b0522ed 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/CollectDelegatedArtifactSizeMetrics.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/CollectDelegatedArtifactSizeMetrics.kt
@@ -67,13 +67,12 @@ internal abstract class CollectDelegatedArtifactSizeMetrics : DefaultTask() {
         }
     }
 
-    private suspend fun S3Client.getObjectAsText(objectKey: String) =
-        getObject(
-            GetObjectRequest {
-                bucket = S3_ARTIFACT_SIZE_METRICS_BUCKET
-                key = objectKey
-            },
-        ) { it.body?.decodeToString() ?: throw AwsSdkGradleException("Metrics file $objectKey is missing a body") }
+    private suspend fun S3Client.getObjectAsText(objectKey: String) = getObject(
+        GetObjectRequest {
+            bucket = S3_ARTIFACT_SIZE_METRICS_BUCKET
+            key = objectKey
+        },
+    ) { it.body?.decodeToString() ?: throw AwsSdkGradleException("Metrics file $objectKey is missing a body") }
 
     private fun combine(metricsFiles: List<String>) = buildString {
         appendLine("Artifact, Size")
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/PutArtifactSizeMetricsInCloudWatch.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/PutArtifactSizeMetricsInCloudWatch.kt
index 0e2c5be..73ec062 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/PutArtifactSizeMetricsInCloudWatch.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/PutArtifactSizeMetricsInCloudWatch.kt
@@ -4,7 +4,6 @@
  */
 package aws.sdk.kotlin.gradle.plugins.artifactsizemetrics
 
-import aws.sdk.kotlin.gradle.util.stringPropertyNotNull
 import aws.sdk.kotlin.services.cloudwatch.CloudWatchClient
 import aws.sdk.kotlin.services.cloudwatch.model.Dimension
 import aws.sdk.kotlin.services.cloudwatch.model.MetricDatum
@@ -36,7 +35,6 @@ internal abstract class PutArtifactSizeMetricsInCloudWatch : DefaultTask() {
     fun put() {
         val currentTime = Instant.now()
         val pluginConfig = project.rootProject.extensions.getByType(ArtifactSizeMetricsPluginConfig::class.java)
-        val releaseTag = project.stringPropertyNotNull("release")
 
         val metrics = metricsFile
             .get()
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/util/ProjectExt.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/util/ProjectExt.kt
index 9907c73..96fb9c9 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/util/ProjectExt.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/util/ProjectExt.kt
@@ -45,8 +45,7 @@ public fun Project.localProperties(): Map<String, Any> {
  * * property from extras
  * @return property if it exists or null
  */
-public fun Project.prop(name: String): Any? =
-    properties[name] ?: localProperties()[name] ?: extra.getOrNull(name)
+public fun Project.prop(name: String): Any? = properties[name] ?: localProperties()[name] ?: extra.getOrNull(name)
 
 inline fun <reified T> Project.typedProp(name: String): T? {
     val any = prop(name)
@@ -70,9 +69,8 @@ public inline fun Project.verifyRootProject(lazyMessage: () -> Any) {
  * @throws AwsSdkGradleException If the property is empty or null
  * @return The property as a String
  */
-fun Project.stringPropertyNotNull(property: String): String =
-    findProperty(property)?.toString()?.also {
-        check(it.isNotEmpty()) { "The $property property is set to empty \"-P$property=\" (no value set). Please specify a value." }
-    } ?: throw AwsSdkGradleException("The $property property is not set. Please set a value: \"-P$property=YOUR_VALUE\"")
+fun Project.stringPropertyNotNull(property: String): String = findProperty(property)?.toString()?.also {
+    check(it.isNotEmpty()) { "The $property property is set to empty \"-P$property=\" (no value set). Please specify a value." }
+} ?: throw AwsSdkGradleException("The $property property is not set. Please set a value: \"-P$property=YOUR_VALUE\"")
 
 class AwsSdkGradleException(message: String) : GradleException(message)
diff --git a/build-plugins/kmp-conventions/build.gradle.kts b/build-plugins/kmp-conventions/build.gradle.kts
index 0c5d290..b312e15 100644
--- a/build-plugins/kmp-conventions/build.gradle.kts
+++ b/build-plugins/kmp-conventions/build.gradle.kts
@@ -18,7 +18,7 @@ repositories {
 
 dependencies {
     implementation(project(":build-plugins:build-support"))
-    compileOnly(kotlin("gradle-plugin", "2.0.10"))
+    compileOnly(kotlin("gradle-plugin", "2.1.0"))
     testImplementation(libs.junit.jupiter)
 }
 
diff --git a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildExtension.kt b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildExtension.kt
index 722af36..07f0827 100644
--- a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildExtension.kt
+++ b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildExtension.kt
@@ -25,14 +25,13 @@ open class SmithyBuildExtension(private val project: Project) {
      * @param projectionName the name of the projection to get the output path for
      * @param pluginName the name of the plugin to get the output path for
      */
-    public fun getProjectionPath(projectionName: String, pluginName: String): Provider<Path> =
-        SmithyUtils.getProjectionOutputDirProperty(project).map {
-            // FIXME - smithy gradle plugin expects the input file to pass "isDirectory"
-            // but that flag is only true IFF the path exists AND is a directory
-            // see https://github.com/smithy-lang/smithy-gradle-plugin/issues/113
-            it.asFile.mkdirs()
-            SmithyUtils.getProjectionPluginPath(it.asFile, projectionName, pluginName)
-        }
+    public fun getProjectionPath(projectionName: String, pluginName: String): Provider<Path> = SmithyUtils.getProjectionOutputDirProperty(project).map {
+        // FIXME - smithy gradle plugin expects the input file to pass "isDirectory"
+        // but that flag is only true IFF the path exists AND is a directory
+        // see https://github.com/smithy-lang/smithy-gradle-plugin/issues/113
+        it.asFile.mkdirs()
+        SmithyUtils.getProjectionPluginPath(it.asFile, projectionName, pluginName)
+    }
 }
 
 // smithy-kotlin specific extensions
@@ -43,8 +42,7 @@ open class SmithyBuildExtension(private val project: Project) {
  *
  * @param projectionName the name of the projection to use
  */
-public fun SmithyBuildExtension.smithyKotlinProjectionPath(projectionName: String): Provider<Path> =
-    getProjectionPath(projectionName, "kotlin-codegen")
+public fun SmithyBuildExtension.smithyKotlinProjectionPath(projectionName: String): Provider<Path> = getProjectionPath(projectionName, "kotlin-codegen")
 
 /**
  * Get the default generated kotlin source directory for the `smithy-kotlin` plugin.
@@ -52,5 +50,4 @@ public fun SmithyBuildExtension.smithyKotlinProjectionPath(projectionName: Strin
  *
  * @param projectionName the name of the projection to use
  */
-public fun SmithyBuildExtension.smithyKotlinProjectionSrcDir(projectionName: String): Provider<Path> =
-    smithyKotlinProjectionPath(projectionName).map { it.resolve("src/main/kotlin") }
+public fun SmithyBuildExtension.smithyKotlinProjectionSrcDir(projectionName: String): Provider<Path> = smithyKotlinProjectionPath(projectionName).map { it.resolve("src/main/kotlin") }
diff --git a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildPlugin.kt b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildPlugin.kt
index c4d6e3b..de0b876 100644
--- a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildPlugin.kt
+++ b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/SmithyBuildPlugin.kt
@@ -74,8 +74,7 @@ class SmithyBuildPlugin : Plugin<Project> {
         registerCodegenTasks()
     }
 
-    private fun Project.installExtension() =
-        extensions.create(SMITHY_BUILD_EXTENSION_NAME, SmithyBuildExtension::class.java, project)
+    private fun Project.installExtension() = extensions.create(SMITHY_BUILD_EXTENSION_NAME, SmithyBuildExtension::class.java, project)
 
     private fun Project.registerCodegenTasks() {
         val generateSmithyBuild = tasks.register<GenerateSmithyBuild>(TASK_GENERATE_SMITHY_BUILD) {
@@ -102,8 +101,7 @@ class SmithyBuildPlugin : Plugin<Project> {
         tasks.register<SmithyBuildTask>(TASK_GENERATE_SMITHY_PROJECTIONS) {
             group = "codegen"
             dependsOn(generateSmithyBuild)
-            resolvedCliClasspath.set(codegenConfig)
-            runtimeClasspath.set(codegenConfig)
+            cliClasspath.set(codegenConfig)
             buildClasspath.set(codegenConfig)
             smithyBuildConfigs.set(project.files(generateSmithyBuild))
         }
diff --git a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/SmithyKotlinPluginSettings.kt b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/SmithyKotlinPluginSettings.kt
index fb6e168..0c88577 100644
--- a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/SmithyKotlinPluginSettings.kt
+++ b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/SmithyKotlinPluginSettings.kt
@@ -51,8 +51,7 @@ open class SmithyKotlinApiSettings : ToNode {
         return result
     }
 
-    override fun toString(): String =
-        "SmithyKotlinApiSettings(visibility=$visibility, nullabilityCheckMode=$nullabilityCheckMode, defaultValueSerializationMode=$defaultValueSerializationMode, enableEndpointAuthProvider=$enableEndpointAuthProvider)"
+    override fun toString(): String = "SmithyKotlinApiSettings(visibility=$visibility, nullabilityCheckMode=$nullabilityCheckMode, defaultValueSerializationMode=$defaultValueSerializationMode, enableEndpointAuthProvider=$enableEndpointAuthProvider)"
 }
 
 open class SmithyKotlinBuildSettings : ToNode {
@@ -92,8 +91,7 @@ open class SmithyKotlinBuildSettings : ToNode {
         return result
     }
 
-    override fun toString(): String =
-        "SmithyKotlinBuildSettings(generateFullProject=$generateFullProject, generateDefaultBuildFiles=$generateDefaultBuildFiles, optInAnnotations=$optInAnnotations)"
+    override fun toString(): String = "SmithyKotlinBuildSettings(generateFullProject=$generateFullProject, generateDefaultBuildFiles=$generateDefaultBuildFiles, optInAnnotations=$optInAnnotations)"
 }
 
 open class SmithyKotlinPluginSettings : SmithyBuildPluginSettings {
@@ -160,8 +158,7 @@ open class SmithyKotlinPluginSettings : SmithyBuildPluginSettings {
         return obj.build()
     }
 
-    override fun toString(): String =
-        "SmithyKotlinPluginSettings(pluginName='$pluginName', serviceShapeId=$serviceShapeId, packageName=$packageName, packageVersion=$packageVersion, packageDescription=$packageDescription, sdkId=$sdkId, buildSettings=$buildSettings, apiSettings=$apiSettings)"
+    override fun toString(): String = "SmithyKotlinPluginSettings(pluginName='$pluginName', serviceShapeId=$serviceShapeId, packageName=$packageName, packageVersion=$packageVersion, packageDescription=$packageDescription, sdkId=$sdkId, buildSettings=$buildSettings, apiSettings=$apiSettings)"
 }
 
 fun SmithyProjection.smithyKotlinPlugin(configure: SmithyKotlinPluginSettings.() -> Unit) {
diff --git a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/Utils.kt b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/Utils.kt
index 7b4400e..3e838ce 100644
--- a/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/Utils.kt
+++ b/build-plugins/smithy-build/src/main/kotlin/aws/sdk/kotlin/gradle/codegen/dsl/Utils.kt
@@ -36,8 +36,7 @@ internal fun ObjectNode.Builder.withNullableMember(key: String, member: Boolean?
     return withMember(key, member)
 }
 
-internal fun <T : ToNode> ObjectNode.Builder.withNullableMember(key: String, member: T?): ObjectNode.Builder =
-    withOptionalMember(key, Optional.ofNullable(member))
+internal fun <T : ToNode> ObjectNode.Builder.withNullableMember(key: String, member: T?): ObjectNode.Builder = withOptionalMember(key, Optional.ofNullable(member))
 
 internal fun ObjectNode.Builder.withArrayMember(key: String, member: List<String>): ObjectNode.Builder = apply {
     val arrNode = member.map { Node.from(it) }.let { ArrayNode.fromNodes(it) }
diff --git a/gradle.properties b/gradle.properties
index fde4e31..0a3d361 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
 kotlin.code.style=official
 
 # kotlin
-kotlinVersion=2.0.10
+kotlinVersion=2.1.0
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index b26f7ac..3349f19 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
-ktlint = "1.3.0"
-smithy-version = "1.42.0"
-smithy-gradle-plugin-version = "0.9.0"
+ktlint = "1.5.0"
+smithy-version = "1.53.0"
+smithy-gradle-plugin-version = "1.1.0"
 junit-version = "5.10.1"
 
 [libraries]
@@ -11,7 +11,7 @@ ktlint-cli-ruleset-core = { module = "com.pinterest.ktlint:ktlint-cli-ruleset-co
 ktlint-test = {module = "com.pinterest.ktlint:ktlint-test", version.ref = "ktlint" }
 nexusPublishPlugin = { module = "io.github.gradle-nexus:publish-plugin", version = "1.3.0" }
 smithy-model = { module = "software.amazon.smithy:smithy-model", version.ref = "smithy-version" }
-smithy-gradle-base-plugin = { module = "software.amazon.smithy:smithy-base-plugin", version.ref = "smithy-gradle-plugin-version" }
+smithy-gradle-base-plugin = { module = "software.amazon.smithy.gradle:smithy-base", version.ref = "smithy-gradle-plugin-version" }
 
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-version" }
 
diff --git a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
index ee4a7b0..16fc2e8 100644
--- a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
+++ b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
@@ -30,9 +30,8 @@ class MultilineIfElseBlockRule : Rule(RuleId("multiline-if-else-block"), About()
     /**
      * Determines if this node is an `else if` block.
      */
-    private fun ASTNode.isElseIfBlock() =
-        elementType == ElementType.ELSE &&
-            firstChildNode?.elementType == ElementType.IF
+    private fun ASTNode.isElseIfBlock() = elementType == ElementType.ELSE &&
+        firstChildNode?.elementType == ElementType.IF
 
     /**
      * Determines if this node is on the same source file line number as its parent.