diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 408d73f7..e2d338d8 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -112,3 +112,14 @@ public *;
 -keep class com.simplecityapps.**
 -keep interface com.simplecityapps.**
 
+##---------------Begin: proguard configuration for Gson  ----------
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all of it.
+-keepattributes Signature
+
+# Gson specific classes
+-keep class sun.misc.Unsafe { *; }
+#-keep class com.google.gson.stream.** { *; }
+
+# Application classes that will be serialized/deserialized over Gson
+-keep class com.music.player.bhandari.m.trackInfo.models.** { *; }
\ No newline at end of file
diff --git a/app/src/main/java/com/music/player/bhandari/m/trackInfo/TrackInfoService.kt b/app/src/main/java/com/music/player/bhandari/m/trackInfo/TrackInfoService.kt
index c8e64695..eef3275b 100644
--- a/app/src/main/java/com/music/player/bhandari/m/trackInfo/TrackInfoService.kt
+++ b/app/src/main/java/com/music/player/bhandari/m/trackInfo/TrackInfoService.kt
@@ -1,5 +1,6 @@
 package com.music.player.bhandari.m.trackInfo.models
 
+import android.support.annotation.Keep
 import com.music.player.bhandari.m.trackInfo.models.album.AlbumWrap
 import com.music.player.bhandari.m.trackInfo.models.similar.SimilartracksWrap
 import com.music.player.bhandari.m.trackInfo.models.track.TrackWrap
@@ -7,6 +8,7 @@ import retrofit2.Call
 import retrofit2.http.GET
 import retrofit2.http.Query
 
+@Keep
 interface TrackInfoService {
 
     @GET("?method=track.getInfo&api_key=4e464c9ca4e6763aca6d5a7a04728c77&autocorrect=1&format=json")
diff --git a/app/version.properties b/app/version.properties
index 949e1b6e..898fdf0d 100644
--- a/app/version.properties
+++ b/app/version.properties
@@ -1,4 +1,4 @@
-#Sun Dec 16 12:09:06 IST 2018
-VERSION_NUMBER=187
-VERSION_BUILD=366
+#Sun Dec 16 16:46:20 IST 2018
+VERSION_NUMBER=189
+VERSION_BUILD=376
 VERSION_PATCH=0