diff --git a/sample/build.gradle b/sample/build.gradle
index e8bae6d..d7bb274 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -26,7 +26,7 @@ android {
 
 dependencies {
     implementation project(':preferenceholder')
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.3.71'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.5.21'
     implementation 'org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.14.0'
     implementation 'com.android.support:appcompat-v7:28.0.0'