diff --git a/base/build.gradle b/base/build.gradle
index 99e12b36..709ef386 100644
--- a/base/build.gradle
+++ b/base/build.gradle
@@ -15,10 +15,6 @@ android {
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
-    buildFeatures {
-        buildConfig true
-    }
-
     buildTypes {
         release {
             minifyEnabled false
@@ -60,11 +56,6 @@ dependencies {
     //noinspection GradleDependency
     coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:$desugarLibVersion"
 
-    def emoji2Version = "1.3.0"
-    def lifecycleVersion = "2.6.1"
-    def startupVersion = "1.1.1"
-    def workVersion = "2.8.1"
-
     api "androidx.appcompat:appcompat:$appcompatVersion"
     api "androidx.browser:browser:1.5.0"
     api "androidx.core:core-ktx:$coreKtxVersion"
@@ -92,7 +83,7 @@ dependencies {
     api "com.github.kenglxn.QRGen:android:2.5.0"
     api "com.github.omadahealth:swipy:1.2.3@aar"
     api "com.github.woxthebox:draglistview:1.6.6"
-    api "com.google.android.exoplayer:exoplayer:2.18.5"
+    api "com.google.android.exoplayer:exoplayer:$exoplayerVersion"
     api "com.google.android.flexbox:flexbox:3.0.0"
     api "com.google.android.material:material:$materialVersion"
     api "com.otaliastudios:transcoder:0.10.4"
diff --git a/base/src/debug/java/jp/juggler/base/IsDebugBuild.kt b/base/src/debug/java/jp/juggler/base/IsDebugBuild.kt
new file mode 100644
index 00000000..ec6ce8fe
--- /dev/null
+++ b/base/src/debug/java/jp/juggler/base/IsDebugBuild.kt
@@ -0,0 +1,4 @@
+package jp.juggler.base
+
+const val IS_DEBUG_BUILD = true
+const val IS_RELEASE_BUILD = !IS_DEBUG_BUILD
diff --git a/base/src/main/java/jp/juggler/util/log/Benchmark.kt b/base/src/main/java/jp/juggler/util/log/Benchmark.kt
index 9af7663e..75becd35 100644
--- a/base/src/main/java/jp/juggler/util/log/Benchmark.kt
+++ b/base/src/main/java/jp/juggler/util/log/Benchmark.kt
@@ -1,11 +1,11 @@
 package jp.juggler.util.log
 
 import android.os.SystemClock
-import jp.juggler.base.BuildConfig
+import jp.juggler.base.IS_DEBUG_BUILD
 
 val benchmarkLog = LogCategory("Benchmark")
 
-val benchmarkLimitDefault = if (BuildConfig.DEBUG) 10L else 100L
+val benchmarkLimitDefault = if (IS_DEBUG_BUILD) 10L else 100L
 
 inline fun <T : Any?> benchmark(
     caption: String,
diff --git a/base/src/release/java/jp/juggler/base/IsDebugBuild.kt b/base/src/release/java/jp/juggler/base/IsDebugBuild.kt
new file mode 100644
index 00000000..da023bc6
--- /dev/null
+++ b/base/src/release/java/jp/juggler/base/IsDebugBuild.kt
@@ -0,0 +1,4 @@
+package jp.juggler.base
+
+const val IS_DEBUG_BUILD = false
+const val IS_RELEASE_BUILD = !IS_DEBUG_BUILD
diff --git a/build.gradle b/build.gradle
index a30c473d..a4f0327d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,16 +13,19 @@ buildscript {
     ext.coreKtxVersion = "1.10.0"
     ext.desugarLibVersion = "1.2.0"
     ext.detektVersion = "1.22.0"
+    ext.emoji2Version = "1.3.0"
+    ext.exoplayerVersion = "2.18.6"
     ext.glideVersion = "4.14.2"
     ext.javaSourceCompatibility = JavaVersion.VERSION_1_8
     ext.javaTargetCompatibility = JavaVersion.VERSION_1_8
     ext.junitVersion = "4.13.2"
     ext.koinVersion = "3.3.3"
-    ext.kotlinJvmToolchain = 17
     ext.kotlinJvmTarget = "1.8"
+    ext.kotlinJvmToolchain = 17
     ext.kotlinVersion = "1.8.20"
     ext.kotlinxCoroutinesVersion = "1.6.4"
     ext.kspVersion = "1.8.20-1.0.11"
+    ext.lifecycleVersion = "2.6.1"
     ext.materialVersion = "1.8.0"
     ext.okhttpVersion = "4.10.0"
     ext.preferenceVersion = "1.2.0"
@@ -30,7 +33,9 @@ buildscript {
     ext.stCompileSdkVersion = 33
     ext.stMinSdkVersion = 26
     ext.stTargetSdkVersion = 33
+    ext.startupVersion = "1.1.1"
     ext.testKtxVersion = "1.5.0"
+    ext.workVersion = "2.8.1"
 
     repositories {
         google()