diff --git a/pluto-kotlin-client-sdk/build.gradle b/pluto-kotlin-client-sdk/build.gradle
index 68bae75..e59f95f 100644
--- a/pluto-kotlin-client-sdk/build.gradle
+++ b/pluto-kotlin-client-sdk/build.gradle
@@ -4,8 +4,8 @@ apply plugin: 'kotlin-android-extensions'
 apply plugin: 'maven-publish'
 
 buildscript {
-    ext.versionCode = 12
-    ext.versionName = '0.6'
+    ext.versionCode = 13
+    ext.versionName = '0.6.1'
 }
 
 android {
diff --git a/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/Pluto+Binding.kt b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/Pluto+Binding.kt
index af88e3d..0d78f11 100644
--- a/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/Pluto+Binding.kt
+++ b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/Pluto+Binding.kt
@@ -7,7 +7,7 @@ import retrofit2.Response
 val availableLoginTypes: Array<Pluto.LoginType>
     get() = arrayOf(Pluto.LoginType.mail, Pluto.LoginType.mail)
 
-val Pluto.availableBindings: Array<PlutoUserBinding>?
+val Pluto.availableBindings: Array<PlutoUser.Binding>?
     get() = data.user?.bindings
 
 fun Pluto.bind(
diff --git a/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoModel.kt b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoModel.kt
index cb1107d..8063368 100644
--- a/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoModel.kt
+++ b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoModel.kt
@@ -102,17 +102,3 @@ internal class PlutoModel(context: Context) {
         infoJSONString = null
     }
 }
-
-data class PlutoUser(
-    @field:SerializedName("sub") var id: Int,
-    @field:SerializedName("user_id") var userId: String,
-    @field:SerializedName("user_id_updated") var userIdUpdated: Boolean,
-    @field:SerializedName("avatar") var avatar: String,
-    @field:SerializedName("name") var name: String,
-    @field:SerializedName("bindings") var bindings: Array<PlutoUserBinding>
-)
-
-data class PlutoUserBinding(
-    @field:SerializedName("login_type") val loginType: Pluto.LoginType,
-    @field:SerializedName("mail") var mail: String?
-)
\ No newline at end of file
diff --git a/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoUser.kt b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoUser.kt
new file mode 100644
index 0000000..51e0d5a
--- /dev/null
+++ b/pluto-kotlin-client-sdk/src/main/java/com/mushare/plutosdk/PlutoUser.kt
@@ -0,0 +1,50 @@
+package com.mushare.plutosdk
+
+import com.google.gson.annotations.SerializedName
+
+data class PlutoUser(
+    @field:SerializedName("sub") var id: Int,
+    @field:SerializedName("user_id") var userId: String,
+    @field:SerializedName("user_id_updated") var userIdUpdated: Boolean,
+    @field:SerializedName("avatar") var avatar: String,
+    @field:SerializedName("name") var name: String,
+    @field:SerializedName("bindings") var bindings: Array<Binding>
+) {
+    data class Binding(
+        @field:SerializedName("login_type") val loginType: Pluto.LoginType,
+        @field:SerializedName("mail") var mail: String?
+    )
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as PlutoUser
+
+        if (id != other.id) return false
+        if (userId != other.userId) return false
+        if (userIdUpdated != other.userIdUpdated) return false
+        if (avatar != other.avatar) return false
+        if (name != other.name) return false
+        if (!bindings.contentEquals(other.bindings)) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = id
+        result = 31 * result + userId.hashCode()
+        result = 31 * result + userIdUpdated.hashCode()
+        result = 31 * result + avatar.hashCode()
+        result = 31 * result + name.hashCode()
+        result = 31 * result + bindings.contentHashCode()
+        return result
+    }
+
+    val mail: Binding?
+        get() = bindings.firstOrNull { it.loginType == Pluto.LoginType.mail }
+
+    val google: Binding?
+        get() = bindings.firstOrNull { it.loginType == Pluto.LoginType.google }
+}
+