diff --git a/NcmbFcmPlugin/build.gradle b/NcmbFcmPlugin/build.gradle
index c7ae573f..cd501fbd 100644
--- a/NcmbFcmPlugin/build.gradle
+++ b/NcmbFcmPlugin/build.gradle
@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.2.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/NcmbFcmPlugin/gradle/wrapper/gradle-wrapper.properties b/NcmbFcmPlugin/gradle/wrapper/gradle-wrapper.properties
index fe82504d..0050d6ab 100644
--- a/NcmbFcmPlugin/gradle/wrapper/gradle-wrapper.properties
+++ b/NcmbFcmPlugin/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Nov 06 12:31:10 JST 2015
+#Thu Sep 12 15:10:05 ICT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
diff --git a/NcmbFcmPlugin/ncmbfcmplugin/build.gradle b/NcmbFcmPlugin/ncmbfcmplugin/build.gradle
index 6ff9dd97..a5a94fb6 100644
--- a/NcmbFcmPlugin/ncmbfcmplugin/build.gradle
+++ b/NcmbFcmPlugin/ncmbfcmplugin/build.gradle
@@ -1,8 +1,8 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 26
-    buildToolsVersion "26.0.2"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.3"
 
     defaultConfig {
         minSdkVersion 14
@@ -24,10 +24,11 @@ repositories {
 }
 
 dependencies {
-    compileOnly fileTree(include: ['*.jar'], dir: '../libs')
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation 'com.google.firebase:firebase-messaging:17.1.0'
-    implementation 'com.google.android.gms:play-services-base:15.0.1'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.annotation:annotation:1.1.0'
+    implementation 'com.google.firebase:firebase-messaging:20.0.0'
+    implementation 'com.google.android.gms:play-services-base:17.0.0'
+    compileOnly fileTree(dir: 'src/libs', include: ['*.aar', '*.jar'], exclude: [])
 }
 
 android.libraryVariants.all { variant ->
diff --git a/NcmbFcmPlugin/ncmbfcmplugin/release/ncmbfcmplugin.aar b/NcmbFcmPlugin/ncmbfcmplugin/release/ncmbfcmplugin.aar
index 23c4cc47..3ba3c1c6 100644
Binary files a/NcmbFcmPlugin/ncmbfcmplugin/release/ncmbfcmplugin.aar and b/NcmbFcmPlugin/ncmbfcmplugin/release/ncmbfcmplugin.aar differ
diff --git a/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/FCMInit.java b/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/FCMInit.java
index 4e547bef..c7acc91b 100644
--- a/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/FCMInit.java
+++ b/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/FCMInit.java
@@ -20,9 +20,10 @@
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.os.Build;
-import android.support.annotation.NonNull;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+
 import com.google.android.gms.common.ConnectionResult;
 import com.google.android.gms.common.GoogleApiAvailability;
 import com.google.android.gms.tasks.OnCanceledListener;
diff --git a/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/NCMBFirebaseMessagingService.java b/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/NCMBFirebaseMessagingService.java
index 6a50f9b9..97b40d28 100755
--- a/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/NCMBFirebaseMessagingService.java
+++ b/NcmbFcmPlugin/ncmbfcmplugin/src/main/java/com/nifcloud/mbaas/ncmbfcmplugin/NCMBFirebaseMessagingService.java
@@ -25,9 +25,10 @@
 import android.media.RingtoneManager;
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 
+import androidx.core.app.NotificationCompat;
+
 import com.google.firebase.messaging.FirebaseMessagingService;
 import com.google.firebase.messaging.RemoteMessage;
 import com.unity3d.player.UnityPlayer;
diff --git a/ncmb_unity/Assets/Plugins/Android/collection-1.1.0.jar b/ncmb_unity/Assets/Plugins/Android/collection-1.1.0.jar
new file mode 100644
index 00000000..761fe3bf
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/collection-1.1.0.jar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/core-1.1.0.aar b/ncmb_unity/Assets/Plugins/Android/core-1.1.0.aar
new file mode 100644
index 00000000..01c83a3e
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/core-1.1.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-analytics-impl-16.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-analytics-impl-16.0.0.aar
deleted file mode 100644
index fbc96d0c..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/firebase-analytics-impl-16.0.0.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-common-16.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-common-16.0.0.aar
deleted file mode 100644
index 39b09176..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/firebase-common-16.0.0.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-common-19.1.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-common-19.1.0.aar
new file mode 100644
index 00000000..20876c0b
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/firebase-common-19.1.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-iid-16.2.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-iid-16.2.0.aar
deleted file mode 100644
index 862b9cee..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/firebase-iid-16.2.0.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-iid-20.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-iid-20.0.0.aar
new file mode 100644
index 00000000..27343a62
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/firebase-iid-20.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-16.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-17.0.0.aar
similarity index 79%
rename from ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-16.0.0.aar
rename to ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-17.0.0.aar
index d757daaa..c728e6db 100644
Binary files a/ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-16.0.0.aar and b/ncmb_unity/Assets/Plugins/Android/firebase-iid-interop-17.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-measurement-connector-18.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-measurement-connector-18.0.0.aar
new file mode 100644
index 00000000..f94e3d1b
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/firebase-measurement-connector-18.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-messaging-17.1.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-messaging-17.1.0.aar
deleted file mode 100644
index 384f59ac..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/firebase-messaging-17.1.0.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/firebase-messaging-20.0.0.aar b/ncmb_unity/Assets/Plugins/Android/firebase-messaging-20.0.0.aar
new file mode 100644
index 00000000..bb86d5cc
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/firebase-messaging-20.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/legacy-support-core-utils-1.0.0.aar b/ncmb_unity/Assets/Plugins/Android/legacy-support-core-utils-1.0.0.aar
new file mode 100644
index 00000000..2980f603
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/legacy-support-core-utils-1.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/legacy-support-v4-1.0.0.aar b/ncmb_unity/Assets/Plugins/Android/legacy-support-v4-1.0.0.aar
new file mode 100644
index 00000000..bc64a974
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/legacy-support-v4-1.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/ncmbfcmplugin.aar b/ncmb_unity/Assets/Plugins/Android/ncmbfcmplugin.aar
index 23c4cc47..3ba3c1c6 100644
Binary files a/ncmb_unity/Assets/Plugins/Android/ncmbfcmplugin.aar and b/ncmb_unity/Assets/Plugins/Android/ncmbfcmplugin.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-base-15.0.1.aar b/ncmb_unity/Assets/Plugins/Android/play-services-base-15.0.1.aar
deleted file mode 100644
index b1dbf35c..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/play-services-base-15.0.1.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-base-17.0.0.aar b/ncmb_unity/Assets/Plugins/Android/play-services-base-17.0.0.aar
new file mode 100644
index 00000000..9499f9b5
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/play-services-base-17.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-basement-15.0.1.aar b/ncmb_unity/Assets/Plugins/Android/play-services-basement-15.0.1.aar
deleted file mode 100644
index 20a42f28..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/play-services-basement-15.0.1.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-basement-17.1.1.aar b/ncmb_unity/Assets/Plugins/Android/play-services-basement-17.1.1.aar
new file mode 100644
index 00000000..8022495b
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/play-services-basement-17.1.1.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-measurement-base-15.0.0.aar b/ncmb_unity/Assets/Plugins/Android/play-services-measurement-base-15.0.0.aar
deleted file mode 100644
index 922c26c6..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/play-services-measurement-base-15.0.0.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-tasks-15.0.1.aar b/ncmb_unity/Assets/Plugins/Android/play-services-tasks-15.0.1.aar
deleted file mode 100644
index e10066cc..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/play-services-tasks-15.0.1.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/play-services-tasks-17.0.0.aar b/ncmb_unity/Assets/Plugins/Android/play-services-tasks-17.0.0.aar
new file mode 100644
index 00000000..c58fbfb3
Binary files /dev/null and b/ncmb_unity/Assets/Plugins/Android/play-services-tasks-17.0.0.aar differ
diff --git a/ncmb_unity/Assets/Plugins/Android/support-compat-26.0.2.aar b/ncmb_unity/Assets/Plugins/Android/support-compat-26.0.2.aar
deleted file mode 100644
index 739c7b04..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/support-compat-26.0.2.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/support-core-utils-26.0.2.aar b/ncmb_unity/Assets/Plugins/Android/support-core-utils-26.0.2.aar
deleted file mode 100644
index b377cea8..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/support-core-utils-26.0.2.aar and /dev/null differ
diff --git a/ncmb_unity/Assets/Plugins/Android/support-v4-26.0.2.aar b/ncmb_unity/Assets/Plugins/Android/support-v4-26.0.2.aar
deleted file mode 100644
index d00371a3..00000000
Binary files a/ncmb_unity/Assets/Plugins/Android/support-v4-26.0.2.aar and /dev/null differ