diff --git a/app/build.gradle b/app/build.gradle
index 51ef94b9..bb126976 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -110,8 +110,8 @@ dependencies {
     compile 'com.github.semoncat.seekarc:library:0.1'
     compile 'com.sothree.slidinguppanel:library:3.1.1'
 
-    compile 'com.squareup.retrofit:retrofit:2.0.0-beta1'
-    compile 'com.squareup.retrofit:converter-gson:2.0.0-beta1'
+    compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'
+    compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
     compile 'com.squareup.okhttp:okhttp:2.5.0'
 
     compile 'com.github.kabouzeid:Android-Universal-Image-Loader:8ffb5d4afa'
diff --git a/app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java b/app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java
index 9946b97e..51594bf8 100644
--- a/app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java
+++ b/app/src/main/java/com/kabouzeid/gramophone/ui/activities/ArtistDetailActivity.java
@@ -64,6 +64,7 @@ import butterknife.Bind;
 import butterknife.ButterKnife;
 import retrofit.Callback;
 import retrofit.Response;
+import retrofit.Retrofit;
 
 /**
  * Be careful when changing things in this Activity!
@@ -257,7 +258,7 @@ public class ArtistDetailActivity extends AbsSlidingMusicPanelActivity implement
     private void loadBiography() {
         lastFMRestClient.getApiService().getArtistInfo(artist.name, null).enqueue(new Callback<LastFmArtist>() {
             @Override
-            public void onResponse(Response<LastFmArtist> response) {
+            public void onResponse(Response<LastFmArtist> response, Retrofit retrofit) {
                 LastFmArtist lastFmArtist = response.body();
                 if (lastFmArtist.getArtist() != null) {
                     String bio = lastFmArtist.getArtist().getBio().getContent();
diff --git a/app/src/main/java/com/kabouzeid/gramophone/ui/activities/tageditor/AlbumTagEditorActivity.java b/app/src/main/java/com/kabouzeid/gramophone/ui/activities/tageditor/AlbumTagEditorActivity.java
index f0b2b67b..1860f7a8 100644
--- a/app/src/main/java/com/kabouzeid/gramophone/ui/activities/tageditor/AlbumTagEditorActivity.java
+++ b/app/src/main/java/com/kabouzeid/gramophone/ui/activities/tageditor/AlbumTagEditorActivity.java
@@ -41,6 +41,7 @@ import butterknife.Bind;
 import butterknife.ButterKnife;
 import retrofit.Callback;
 import retrofit.Response;
+import retrofit.Retrofit;
 
 public class AlbumTagEditorActivity extends AbsTagEditorActivity implements TextWatcher {
 
@@ -101,7 +102,7 @@ public class AlbumTagEditorActivity extends AbsTagEditorActivity implements Text
         }
         lastFMRestClient.getApiService().getAlbumInfo(albumTitleStr, albumArtistNameStr).enqueue(new Callback<LastFmAlbum>() {
             @Override
-            public void onResponse(final Response<LastFmAlbum> response) {
+            public void onResponse(final Response<LastFmAlbum> response, Retrofit retrofit) {
                 LastFmAlbum lastFmAlbum = response.body();
                 if (lastFmAlbum.getAlbum() != null) {
                     ImageLoader.getInstance().loadImage(LastFMUtil.getLargestAlbumImageUrl(lastFmAlbum.getAlbum().getImage()),