diff --git a/KeepAnnotationsSample/README.md b/KeepAnnotationsSample/README.md
index b8e2a754..3d2ea169 100644
--- a/KeepAnnotationsSample/README.md
+++ b/KeepAnnotationsSample/README.md
@@ -34,12 +34,12 @@ plugins {
 * Register a new task that can generate the artifact with keep rules.
 
 ```kotlin
-val outputJar = project.tasks.named<org.gradle.jvm.tasks.Jar>("jar").flatMap { task ->
-    task.archiveFile
+val jarTask = project.tasks.named<org.gradle.jvm.tasks.Jar>("jar")
+val outputJar = jarTask.flatMap { it.archiveFile }
+val outputFile = jarTask.flatMap { it.archiveFileName }.map { fileName ->
+    "keep${fileName.uppercaseFirstChar()}"
 }
 
-val outputFile = outputJar.map { file -> "keep${file.asFile.name.uppercaseFirstChar()}" }
-
 // Register the JAR transform for extracting keep rules.
 val artifactTask = annotationKeep.registerJavaArchiveTransform(
     taskName = "keepRulesJar",
@@ -54,7 +54,7 @@ val artifactTask = annotationKeep.registerJavaArchiveTransform(
 // Register the new artifact.
 project.configurations.configureEach {
     if (name == "apiElements" || name == "runtimeElements") {
-        outgoing.artifact(artifactTask)
+        outgoing.artifact(artifactTask.flatMap { it.outputJar })
     }
 }
 ```
diff --git a/KeepAnnotationsSample/app/build.gradle.kts b/KeepAnnotationsSample/app/build.gradle.kts
index b04a94a6..f0eea7f9 100644
--- a/KeepAnnotationsSample/app/build.gradle.kts
+++ b/KeepAnnotationsSample/app/build.gradle.kts
@@ -50,7 +50,6 @@ dependencies {
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
     testImplementation(libs.junit)
-    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
     androidTestImplementation(libs.androidx.espresso.core)
     androidTestImplementation(libs.androidx.junit)
     debugImplementation(libs.androidx.compose.ui.test.manifest)
diff --git a/KeepAnnotationsSample/gradle/libs.versions.toml b/KeepAnnotationsSample/gradle/libs.versions.toml
index c093282d..677868ca 100644
--- a/KeepAnnotationsSample/gradle/libs.versions.toml
+++ b/KeepAnnotationsSample/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "9.5.0-alpha04"
+agp = "9.5.0-alpha05"
 annotationKeep = "1.0.0-SNAPSHOT"
 coreKtx = "1.19.0"
 junit = "4.13.2"
@@ -9,8 +9,8 @@ lifecycleRuntimeKtx = "2.11.0"
 activityCompose = "1.13.0"
 kotlin = "2.4.20"
 composeBom = "2026.08.00"
-appcompat = "1.6.1"
-material = "1.10.0"
+appcompat = "1.8.0"
+material = "1.14.0"
 jetbrainsKotlinJvm = "2.4.20"
 
 [libraries]
diff --git a/KeepAnnotationsSample/java-library/build.gradle.kts b/KeepAnnotationsSample/java-library/build.gradle.kts
index e0338ce8..ff3adb8c 100644
--- a/KeepAnnotationsSample/java-library/build.gradle.kts
+++ b/KeepAnnotationsSample/java-library/build.gradle.kts
@@ -11,12 +11,12 @@ java {
     targetCompatibility = JavaVersion.VERSION_11
 }
 
-val outputJar = project.tasks.named<org.gradle.jvm.tasks.Jar>("jar").flatMap { task ->
-    task.archiveFile
+val jarTask = project.tasks.named<org.gradle.jvm.tasks.Jar>("jar")
+val outputJar = jarTask.flatMap { it.archiveFile }
+val outputFile = jarTask.flatMap { it.archiveFileName }.map { fileName ->
+    "keep${fileName.uppercaseFirstChar()}"
 }
 
-val outputFile = outputJar.map { file -> "keep${file.asFile.name.uppercaseFirstChar()}" }
-
 // Register the JAR transform for extracting keep rules.
 val artifactTask = annotationKeep.registerJavaArchiveTransform(
     taskName = "keepRulesJar",
@@ -27,7 +27,7 @@ val artifactTask = annotationKeep.registerJavaArchiveTransform(
 // Register the new artifact.
 project.configurations.configureEach {
     if (name == "apiElements" || name == "runtimeElements") {
-        outgoing.artifact(artifactTask)
+        outgoing.artifact(artifactTask.flatMap { it.outputJar })
     }
 }