diff --git a/build.gradle.kts b/build.gradle.kts
index 76acb35c7010..236a234577cf 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -108,7 +108,9 @@ project.afterEvaluate {
         // This is especially important for inter-repo linking (e.g., via externalDocumentationLink) because the
         // package-list doesn't contain enough project path information to indicate where modules' documentation are
         // located.
-        fileLayout.set { parent, child -> parent.outputDirectory.get().resolve(child.project.name) }
+        fileLayout.set { parent, child ->
+            parent.outputDirectory.dir(child.project.name)
+        }
 
         includes.from(
             // NOTE: these get concatenated
diff --git a/dokka-aws/src/main/kotlin/aws/sdk/kotlin/dokka/AwsDokkaPlugin.kt b/dokka-aws/src/main/kotlin/aws/sdk/kotlin/dokka/AwsDokkaPlugin.kt
index b80787bd090e..049787a86eaf 100644
--- a/dokka-aws/src/main/kotlin/aws/sdk/kotlin/dokka/AwsDokkaPlugin.kt
+++ b/dokka-aws/src/main/kotlin/aws/sdk/kotlin/dokka/AwsDokkaPlugin.kt
@@ -8,6 +8,8 @@ package aws.sdk.kotlin.dokka
 import aws.sdk.kotlin.dokka.transformers.FilterInternalApis
 import org.jetbrains.dokka.base.DokkaBase
 import org.jetbrains.dokka.plugability.DokkaPlugin
+import org.jetbrains.dokka.plugability.DokkaPluginApiPreview
+import org.jetbrains.dokka.plugability.PluginApiPreviewAcknowledgement
 
 /**
  * Dokka plugin for customizing the AWS Kotlin SDK generated API docs
@@ -22,4 +24,7 @@ class AwsDokkaPlugin : DokkaPlugin() {
     val filterInternalApis by extending {
         dokkaBase.preMergeDocumentableTransformer providing ::FilterInternalApis
     }
+
+    @OptIn(DokkaPluginApiPreview::class)
+    override fun pluginApiPreviewAcknowledgement(): PluginApiPreviewAcknowledgement = PluginApiPreviewAcknowledgement
 }
diff --git a/gradle.properties b/gradle.properties
index 337e2997aa25..57cc91ed6b1d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,8 +15,8 @@ smithyGradleVersion=0.6.0
 smithyKotlinVersion=0.27.4
 
 # kotlin
-kotlinVersion=1.8.22
-dokkaVersion=1.7.10
+kotlinVersion=1.9.0
+dokkaVersion=1.9.0
 
 # kotlin JVM
 kotlinJVMTargetVersion=1.8