diff --git a/app/build.gradle b/app/build.gradle
index 2538a406..a26793d1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,10 @@ android {
         applicationId "one.nem.lacerta"
         minSdk 26
         targetSdk 33
-        versionCode 1
-        versionName "1.0"
+
+        // Develop上では次回のリリースバージョンを指定
+        versionCode 1000
+        versionName "1.0.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -26,6 +28,13 @@ android {
             applicationIdSuffix ".debug"
             matchingFallbacks = ['release']
         }
+        internal_release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+
+            applicationIdSuffix ".internal"
+            matchingFallbacks = ['release']
+        }
         beta_release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'