diff --git a/app/build.gradle b/app/build.gradle
index a041b9c..7916f0b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -11,8 +11,8 @@ android {
         applicationId "com.github.kr328.clash"
         minSdkVersion 24
         targetSdkVersion 29
-        versionCode 1
-        versionName "1.0"
+        versionCode 10001
+        versionName "1.0.1-alpha"
     }
     buildTypes {
         release {
diff --git a/app/src/main/java/com/github/kr328/clash/FeedbackActivity.kt b/app/src/main/java/com/github/kr328/clash/FeedbackActivity.kt
index b93b9d4..f23d1e1 100644
--- a/app/src/main/java/com/github/kr328/clash/FeedbackActivity.kt
+++ b/app/src/main/java/com/github/kr328/clash/FeedbackActivity.kt
@@ -1,10 +1,12 @@
 package com.github.kr328.clash
 
 import android.os.Bundle
+import androidx.annotation.Keep
 import androidx.preference.PreferenceFragmentCompat
 import kotlinx.android.synthetic.main.activity_feedback.*
 
 class FeedbackActivity : BaseActivity() {
+    @Keep
     class Fragment : PreferenceFragmentCompat() {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.feedback, rootKey)
diff --git a/app/src/main/java/com/github/kr328/clash/SettingApplicationActivity.kt b/app/src/main/java/com/github/kr328/clash/SettingApplicationActivity.kt
index 13c6a2e..143cf53 100644
--- a/app/src/main/java/com/github/kr328/clash/SettingApplicationActivity.kt
+++ b/app/src/main/java/com/github/kr328/clash/SettingApplicationActivity.kt
@@ -4,6 +4,7 @@ import android.content.ComponentName
 import android.content.Context
 import android.content.pm.PackageManager
 import android.os.Bundle
+import androidx.annotation.Keep
 import androidx.preference.CheckBoxPreference
 import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
@@ -16,6 +17,7 @@ class SettingApplicationActivity : BaseActivity() {
         const val KEY_START_ON_BOOT = "key_application_start_on_boot"
     }
 
+    @Keep
     class Fragment : PreferenceFragmentCompat(), Preference.OnPreferenceChangeListener {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.setting_application, rootKey)
diff --git a/app/src/main/java/com/github/kr328/clash/SettingMainActivity.kt b/app/src/main/java/com/github/kr328/clash/SettingMainActivity.kt
index 4bcb48c..d8b1ae5 100644
--- a/app/src/main/java/com/github/kr328/clash/SettingMainActivity.kt
+++ b/app/src/main/java/com/github/kr328/clash/SettingMainActivity.kt
@@ -1,10 +1,12 @@
 package com.github.kr328.clash
 
 import android.os.Bundle
+import androidx.annotation.Keep
 import androidx.preference.PreferenceFragmentCompat
 import kotlinx.android.synthetic.main.activity_setting_main.*
 
 class SettingMainActivity : BaseActivity() {
+    @Keep
     class Fragment : PreferenceFragmentCompat() {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.setting_main, rootKey)
diff --git a/app/src/main/java/com/github/kr328/clash/SettingProxyActivity.kt b/app/src/main/java/com/github/kr328/clash/SettingProxyActivity.kt
index f6da6ce..4a5cd1a 100644
--- a/app/src/main/java/com/github/kr328/clash/SettingProxyActivity.kt
+++ b/app/src/main/java/com/github/kr328/clash/SettingProxyActivity.kt
@@ -3,6 +3,7 @@ package com.github.kr328.clash
 import android.content.Context
 import android.os.Bundle
 import android.view.View
+import androidx.annotation.Keep
 import androidx.core.content.edit
 import androidx.preference.CheckBoxPreference
 import androidx.preference.PreferenceFragmentCompat
@@ -14,6 +15,7 @@ class SettingProxyActivity : BaseActivity() {
         private const val KEY_IPV6_SUPPORT = "key_vpn_setting_ipv6_support"
     }
 
+    @Keep
     class Fragment : PreferenceFragmentCompat() {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.setting_proxy, rootKey)
diff --git a/app/src/main/java/com/github/kr328/clash/adapter/LogAdapter.kt b/app/src/main/java/com/github/kr328/clash/adapter/LogAdapter.kt
index 68508e2..d728a19 100644
--- a/app/src/main/java/com/github/kr328/clash/adapter/LogAdapter.kt
+++ b/app/src/main/java/com/github/kr328/clash/adapter/LogAdapter.kt
@@ -14,7 +14,7 @@ import java.util.*
 
 class LogAdapter(private val content: Context,
                  private val buffer: CircularArray<LogEvent>) : RecyclerView.Adapter<LogAdapter.Holder>() {
-    private val formatter = SimpleDateFormat("hh:MM:ss", Locale.getDefault())
+    private val formatter = SimpleDateFormat("HH:mm:ss", Locale.getDefault())
 
     class Holder(view: View) : RecyclerView.ViewHolder(view) {
         val type: TextView = view.findViewById(R.id.adapter_log_type)