diff --git a/app/build.gradle b/app/build.gradle
index d0891be6..001e1eed 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -111,13 +111,13 @@ dependencies {
     implementation "androidx.browser:browser:1.0.0"
 
     // Recyclerview
-    implementation "androidx.recyclerview:recyclerview:1.1.0-beta04"
+    implementation "androidx.recyclerview:recyclerview:1.1.0"
 
     kapt 'androidx.annotation:annotation:1.1.0'
 
     // https://firebase.google.com/support/release-notes/android
-    implementation "com.google.firebase:firebase-core:17.2.0"
-    implementation "com.google.firebase:firebase-messaging:20.0.0"
+    implementation "com.google.firebase:firebase-core:17.2.1"
+    implementation "com.google.firebase:firebase-messaging:20.0.1"
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
diff --git a/build.gradle b/build.gradle
index 037b4b49..bccf8a81 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,13 +15,10 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
-        classpath 'com.google.gms:google-services:4.2.0'
-        // com.google.gms:google-services:4.3.0 および 4.3.1 は警告を出す。
-        // API 'variant.getMergeResources()' is obsolete and has been replaced with 'variant.getMergeResourcesProvider()'.
+        classpath 'com.android.tools.build:gradle:3.5.2'
+        classpath 'com.google.gms:google-services:4.3.3'
 
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-        // kotlin 1.3.0 を入れるとIDEがindex作成でエラーを繰り返し出すようになるので様子見する
 
         classpath 'de.mobilej.unmock:UnMockPlugin:0.7.3'
     }