diff --git a/app/build.gradle b/app/build.gradle
index ac0bb64..b2b2e80 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId "io.neoterm"
         minSdkVersion rootProject.ext.android.MIN_SDK_VERSION
         targetSdkVersion rootProject.ext.android.TARGET_SDK_VERSION
-        versionCode 33
-        versionName "2.0.0-GM"
+        versionCode 34
+        versionName "2.0.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         resConfigs "zh-rCN", "zh-rTW"
         externalNativeBuild {
diff --git a/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt b/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
index 9c352e1..678f068 100644
--- a/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
+++ b/app/src/main/java/io/neoterm/ui/term/NeoTermActivity.kt
@@ -18,6 +18,7 @@ import android.view.inputmethod.InputMethodManager
 import android.widget.ImageButton
 import de.mrapp.android.tabswitcher.*
 import io.neoterm.App
+import io.neoterm.BuildConfig
 import io.neoterm.R
 import io.neoterm.backend.TerminalSession
 import io.neoterm.component.profile.ProfileComponent
@@ -513,6 +514,15 @@ class NeoTermActivity : AppCompatActivity(), ServiceConnection, SharedPreference
     }
 
     private fun addXSession() {
+        if (!BuildConfig.DEBUG) {
+            AlertDialog.Builder(this)
+                    .setTitle(R.string.error)
+                    .setMessage(R.string.sorry_for_development)
+                    .setPositiveButton(android.R.string.yes, null)
+                    .show()
+            return
+        }
+
         if (!tabSwitcher.isSwitcherShown) {
             toggleSwitcher(showSwitcher = true, easterEgg = false)
         }
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index e9c44b1..b9b484d 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -161,6 +161,7 @@
     <string name="input_new_source_repo">输入仓库名</string>
     <string name="error_new_source_url">URL 不能为空</string>
     <string name="error_new_source_repo">仓库 不能为空</string>
+    <string name="sorry_for_development">本功能仍在开发中，所以只能在 DEBUG 构建版本下使用。\n若想尝鲜，请尝试联系开发者来成为测试者。</string>
 
     <string-array name="color_item_names">
         <item>背景色</item>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 3f51362..de9170b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -165,6 +165,7 @@
     <string name="input_new_source_repo">Enter new Repo</string>
     <string name="error_new_source_url">URL cannot be empty</string>
     <string name="error_new_source_repo">Repo cannot be empty</string>
+    <string name="sorry_for_development">This feature is still under development so it is only available on DEBUG builds.\n</string>
 
     <string name="default_source_url">http://janyo.pw:82/kiva/neoterm</string>