diff --git a/app/build.gradle b/app/build.gradle
index 27d3a65..ef6ea5a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -26,7 +26,7 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.google.firebase:firebase-database:11.0.4'
-    implementation 'com.google.firebase:firebase-messaging:11.0.4'
+    implementation 'com.google.firebase:firebase-messaging:21.1.0'
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })