diff --git a/app/build.gradle b/app/build.gradle
index 1ba88621..13a84a8c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -28,8 +28,8 @@ android {
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 15
         targetSdkVersion 26
-        versionCode 6
-        versionName "0.3.0"
+        versionCode 7
+        versionName "0.3.1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
         manifestPlaceholders = [
diff --git a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLessonTest.java b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLessonTest.java
index 492d642d..0758f2cc 100644
--- a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLessonTest.java
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLessonTest.java
@@ -2,9 +2,6 @@ package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 
-import io.github.wulkanowy.data.db.dao.entities.AttendanceLesson;
-import io.github.wulkanowy.data.db.dao.entities.AttendanceLessonDao;
-
 public class AttendanceLessonTest extends AbstractDaoTestLongPk<AttendanceLessonDao, AttendanceLesson> {
 
     public AttendanceLessonTest() {
diff --git a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DiaryTest.java b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DiaryTest.java
index 835ee7c8..f7f56ccb 100644
--- a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DiaryTest.java
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DiaryTest.java
@@ -2,9 +2,6 @@ package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 
-import io.github.wulkanowy.data.db.dao.entities.Diary;
-import io.github.wulkanowy.data.db.dao.entities.DiaryDao;
-
 public class DiaryTest extends AbstractDaoTestLongPk<DiaryDao, Diary> {
 
     public DiaryTest() {
diff --git a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/TimetableLessonTest.java b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/TimetableLessonTest.java
index b215b6be..9796f988 100644
--- a/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/TimetableLessonTest.java
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/TimetableLessonTest.java
@@ -2,9 +2,6 @@ package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 
-import io.github.wulkanowy.data.db.dao.entities.TimetableLesson;
-import io.github.wulkanowy.data.db.dao.entities.TimetableLessonDao;
-
 public class TimetableLessonTest extends AbstractDaoTestLongPk<TimetableLessonDao, TimetableLesson> {
 
     public TimetableLessonTest() {
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java b/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
index 89bf636e..ad743a33 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java
@@ -16,7 +16,6 @@ import javax.inject.Singleton;
 
 import io.github.wulkanowy.api.Vulcan;
 import io.github.wulkanowy.data.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.data.db.dao.entities.DaoSession;
 import io.github.wulkanowy.data.db.dao.migrations.Migration23;
 import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.di.annotations.ApplicationContext;
diff --git a/app/src/main/java/io/github/wulkanowy/data/sync/account/AccountSync.java b/app/src/main/java/io/github/wulkanowy/data/sync/account/AccountSync.java
index 675a58df..550c1f53 100644
--- a/app/src/main/java/io/github/wulkanowy/data/sync/account/AccountSync.java
+++ b/app/src/main/java/io/github/wulkanowy/data/sync/account/AccountSync.java
@@ -3,8 +3,6 @@ package io.github.wulkanowy.data.sync.account;
 import android.content.Context;
 
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 
 import javax.inject.Inject;