diff --git a/sample/build.gradle b/sample/build.gradle
index 4a32f99..1948e35 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -28,7 +28,7 @@ android {
 dependencies {
     implementation project(':calendarviewpager')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.appcompat:appcompat:1.3.1'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test:runner:1.3.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'