diff --git a/app/build.gradle b/app/build.gradle
index 4909d44..750e517 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -32,6 +32,22 @@
 
 dependencies {
 
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+
+
+    // 各 2021/11/23 時点の最新版
+    // Retrofit
+    implementation "com.squareup.retrofit2:retrofit:2.9.0"
+    implementation "com.squareup.retrofit2:converter-moshi:2.9.0"
+
+    implementation 'com.squareup.retrofit2:converter-jackson:2.5.0'
+    implementation 'com.squareup.retrofit2:converter-scalars:2.1.0'
+
+
+    // Moshi
+    implementation "com.squareup.moshi:moshi:1.12.0"
+    implementation "com.squareup.moshi:moshi-kotlin:1.12.0"
+
     implementation 'androidx.appcompat:appcompat:1.3.1'
     implementation 'com.google.android.material:material:1.4.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
@@ -43,16 +59,12 @@
     implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
-
     testImplementation 'junit:junit:4.+'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
-
-    implementation "com.squareup.retrofit2:retrofit:2.5.0"
-    implementation 'com.squareup.retrofit2:converter-jackson:2.5.0'
-    implementation 'com.squareup.retrofit2:converter-scalars:2.1.0'
     implementation 'com.github.bumptech.glide:glide:4.10.0'
     annotationProcessor 'com.github.bumptech.glide:compiler:4.10.0'
     implementation 'com.google.android.material:material:1.1.0-alpha08'
     implementation 'androidx.viewpager2:viewpager2:1.0.0-beta02'
+
 }
\ No newline at end of file