diff --git a/tutorials/kotlin/Polygons/app/build.gradle b/tutorials/kotlin/Polygons/app/build.gradle
index 7e7ed259..45f0b85d 100644
--- a/tutorials/kotlin/Polygons/app/build.gradle
+++ b/tutorials/kotlin/Polygons/app/build.gradle
@@ -31,7 +31,7 @@ dependencies {
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
-    implementation "androidx.core:core-ktx:1.3.2"
+    implementation "androidx.core:core-ktx:1.5.0"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }