diff --git a/lib/build.gradle b/lib/build.gradle
index 64fed12..7d244f9 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -30,7 +30,7 @@ dependencies {
   implementation "androidx.appcompat:appcompat:$appcompat_version"
   implementation "androidx.core:core-ktx:$core_version"
   implementation "com.google.android.material:material:$material_version"
-  testImplementation 'junit:junit:4.12'
+  testImplementation 'junit:junit:4.13'
   androidTestImplementation 'androidx.test:runner:1.2.0'
   androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }
diff --git a/sample/build.gradle b/sample/build.gradle
index e2f297f..db622e7 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -29,7 +29,7 @@ dependencies {
   implementation "androidx.core:core-ktx:$core_version"
   implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
   implementation "com.google.android.material:material:$material_version"
-  testImplementation 'junit:junit:4.12'
+  testImplementation 'junit:junit:4.13'
   androidTestImplementation 'androidx.test:runner:1.2.0'
   androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }