diff --git a/app/build.gradle b/app/build.gradle
index e7c469b2d..8aa36b853 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -29,8 +29,8 @@ android {
         applicationId "me.blog.korn123.easydiary"
         minSdkVersion 21
         targetSdkVersion versions.compileSdk
-        versionCode 311
-        versionName '1.4.311.202406190'
+        versionCode 312
+        versionName '1.4.312.202406200'
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
         multiDexEnabled true
diff --git a/app/src/main/assets/RELEASE_en b/app/src/main/assets/RELEASE_en
index 263afdabf..723107dd8 100644
--- a/app/src/main/assets/RELEASE_en
+++ b/app/src/main/assets/RELEASE_en
@@ -4,7 +4,7 @@
 
 ---------------------------------------------------
 
-# Changes in 1.4.310.202406190 (date: 2024.06.19)
+# Changes in 1.4.312.202406200 (date: 2024.06.20)
   * Applied Android 12 Splash API
 
 # Changes in 1.4.309.202406100 (date: 2024.06.10)
diff --git a/app/src/main/assets/RELEASE_ja b/app/src/main/assets/RELEASE_ja
index 98f72bb94..a16446d51 100644
--- a/app/src/main/assets/RELEASE_ja
+++ b/app/src/main/assets/RELEASE_ja
@@ -4,7 +4,7 @@
 
 ---------------------------------------------------
 
-# Changes in 1.4.310.202406190 (date: 2024.06.19)
+# Changes in 1.4.312.202406200 (date: 2024.06.20)
   * Android 12 スプラッシュ API を適用
 
 # Changes in 1.4.309.202406100 (date: 2024.06.10)
diff --git a/app/src/main/assets/RELEASE_ko b/app/src/main/assets/RELEASE_ko
index 62af94520..c2fb4c0c4 100644
--- a/app/src/main/assets/RELEASE_ko
+++ b/app/src/main/assets/RELEASE_ko
@@ -4,7 +4,7 @@
 
 ---------------------------------------------------
 
-# Changes in 1.4.310.202406190 (date: 2024.06.19)
+# Changes in 1.4.312.202406200 (date: 2024.06.20)
   * 안드로이드12 Splash API 적용
 
 # Changes in 1.4.309.202406100 (date: 2024.06.10)
diff --git a/app/src/main/java/me/blog/korn123/easydiary/activities/BaseDevActivity.kt b/app/src/main/java/me/blog/korn123/easydiary/activities/BaseDevActivity.kt
index c9f88fa21..4ed313924 100644
--- a/app/src/main/java/me/blog/korn123/easydiary/activities/BaseDevActivity.kt
+++ b/app/src/main/java/me/blog/korn123/easydiary/activities/BaseDevActivity.kt
@@ -71,6 +71,7 @@ import kotlinx.coroutines.withContext
 import me.blog.korn123.commons.utils.BiometricUtils.Companion.startListeningBiometric
 import me.blog.korn123.commons.utils.BiometricUtils.Companion.startListeningFingerprint
 import me.blog.korn123.commons.utils.EasyDiaryUtils
+import me.blog.korn123.easydiary.BuildConfig
 import me.blog.korn123.easydiary.R
 import me.blog.korn123.easydiary.api.models.Contents
 import me.blog.korn123.easydiary.api.services.GitHubRepos
@@ -123,6 +124,7 @@ import retrofit2.converter.scalars.ScalarsConverterFactory
 import java.io.File
 import java.net.HttpURLConnection
 import java.net.URL
+import java.util.Locale
 
 
 open class BaseDevActivity : EasyDiaryActivity() {
@@ -181,6 +183,7 @@ open class BaseDevActivity : EasyDiaryActivity() {
         setSupportActionBar(mBinding.partialAppbarLayout.toolbar)
         supportActionBar?.run {
             title = "Easy-Diary Dev Mode"
+            subtitle = String.format(Locale.getDefault(), "v%s_%s_%s (%d)", BuildConfig.VERSION_NAME, BuildConfig.FLAVOR, BuildConfig.BUILD_TYPE, BuildConfig.VERSION_CODE)
             setDisplayHomeAsUpEnabled(true)
         }
     }
diff --git a/app/src/main/java/me/blog/korn123/easydiary/activities/EasyDiaryActivity.kt b/app/src/main/java/me/blog/korn123/easydiary/activities/EasyDiaryActivity.kt
index 46969b407..dd23ef86e 100644
--- a/app/src/main/java/me/blog/korn123/easydiary/activities/EasyDiaryActivity.kt
+++ b/app/src/main/java/me/blog/korn123/easydiary/activities/EasyDiaryActivity.kt
@@ -92,7 +92,7 @@ open class EasyDiaryActivity : BaseSimpleActivity(), ShakeDetector.Listener {
      ***************************************************************************************************/
     fun checkWhatsNewDialog(applyFilter: Boolean = true) {
         arrayListOf<Release>().apply {
-            add(Release(310, R.string.release_310))
+            add(Release(312, R.string.release_312))
             add(Release(309, R.string.release_309))
             add(Release(308, R.string.release_308))
             add(Release(307, R.string.release_307))
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 264cdc613..687e60887 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index 88068faba..02fe20355 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index fc1aeeb3a..61b09cf49 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 8891115ba..6470c44d5 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-hi/strings.xml b/app/src/main/res/values-hi/strings.xml
index 356dd70c3..cc25fd2ab 100644
--- a/app/src/main/res/values-hi/strings.xml
+++ b/app/src/main/res/values-hi/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index 81f03ecfa..e90bf1ee8 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index ee624e301..3e2fe45ad 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Android 14 Foreground Service権限問題が修正されました
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Android 12 スプラッシュ API を適用
     </string>
 
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index fd4849996..6e7d22f3f 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         안드로이드14 Foreground Service 권한이슈가 수정됨
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         안드로이드12 Splash API 적용
     </string>
 
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index d1caa93fa..0e68ab746 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-sat/strings.xml b/app/src/main/res/values-sat/strings.xml
index b1732c764..3a100ffd8 100644
--- a/app/src/main/res/values-sat/strings.xml
+++ b/app/src/main/res/values-sat/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 33c118833..38ab9053e 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 199cdbd56..039defe92 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a2e1fe6e6..cf7fd07f4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -760,8 +760,8 @@
         v1.4.309.202406100 / 2024.06.10\n
         Fixed Android 14 Foreground Service permission issue
     </string>
-    <string name="release_310">
-        v1.4.310.202406190 / 2024.06.19\n
+    <string name="release_312">
+        v1.4.312.202406200 / 2024.06.20\n
         Applied Android 12 Splash API
     </string>