diff --git a/android-example/src/main/java/pl/droidsonroids/jspoon/android/ExampleActivity.java b/android-example/src/main/java/pl/droidsonroids/jspoon/android/ExampleActivity.java
index 22df5e7..23fd4ac 100644
--- a/android-example/src/main/java/pl/droidsonroids/jspoon/android/ExampleActivity.java
+++ b/android-example/src/main/java/pl/droidsonroids/jspoon/android/ExampleActivity.java
@@ -34,7 +34,7 @@ private static class AnimalsDiv {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_example);
-        LinearLayout linearLayout = (LinearLayout) findViewById(R.id.linearLayout);
+        LinearLayout linearLayout = findViewById(R.id.linearLayout);
 
         Jspoon jspoon = Jspoon.create();
         HtmlAdapter<Animals> htmlAdapter = jspoon.adapter(Animals.class);
diff --git a/jspoon/build.gradle b/jspoon/build.gradle
index 41d218b..b65339c 100644
--- a/jspoon/build.gradle
+++ b/jspoon/build.gradle
@@ -8,6 +8,7 @@ plugins {
 dependencies {
     api "org.jsoup:jsoup:$versions.jsoup"
     compileOnly "org.jetbrains:annotations:$versions.annotations"
+    testCompileOnly "org.jetbrains:annotations:$versions.annotations"
     testImplementation "junit:junit:$versions.junit"
 }
 
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/ArrayUtils.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/ArrayUtils.java
index 36959e4..08bf6df 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/ArrayUtils.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/ArrayUtils.java
@@ -45,7 +45,7 @@ static Object toPrimitive(final Object[] array, Class<?> primitiveType) {
         return array;
     }
 
-    static char[] toPrimitive(Character[] array) {
+    private static char[] toPrimitive(Character[] array) {
         if (array == null) {
             return null;
         }
@@ -55,12 +55,12 @@ static char[] toPrimitive(Character[] array) {
                 result[i] = '\u0000';
                 continue;
             }
-            result[i] = array[i].charValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static byte[] toPrimitive(Byte[] array) {
+    private static byte[] toPrimitive(Byte[] array) {
         if (array == null) {
             return null;
         }
@@ -70,12 +70,12 @@ static byte[] toPrimitive(Byte[] array) {
                 result[i] = 0;
                 continue;
             }
-            result[i] = array[i].byteValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static boolean[] toPrimitive(Boolean[] array) {
+    private static boolean[] toPrimitive(Boolean[] array) {
         if (array == null) {
             return null;
         }
@@ -85,12 +85,12 @@ static boolean[] toPrimitive(Boolean[] array) {
                 result[i] = false;
                 continue;
             }
-            result[i] = array[i].booleanValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static float[] toPrimitive(Float[] array) {
+    private static float[] toPrimitive(Float[] array) {
         if (array == null) {
             return null;
         }
@@ -100,12 +100,12 @@ static float[] toPrimitive(Float[] array) {
                 result[i] = 0.0f;
                 continue;
             }
-            result[i] = array[i].floatValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static double[] toPrimitive(Double[] array) {
+    private static double[] toPrimitive(Double[] array) {
         if (array == null) {
             return null;
         }
@@ -115,12 +115,12 @@ static double[] toPrimitive(Double[] array) {
                 result[i] = 0.0d;
                 continue;
             }
-            result[i] = array[i].doubleValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static short[] toPrimitive(Short[] array) {
+    private static short[] toPrimitive(Short[] array) {
         if (array == null) {
             return null;
         }
@@ -130,12 +130,12 @@ static short[] toPrimitive(Short[] array) {
                 result[i] = 0;
                 continue;
             }
-            result[i] = array[i].shortValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static long[] toPrimitive(Long[] array) {
+    private static long[] toPrimitive(Long[] array) {
         if (array == null) {
             return null;
         }
@@ -145,12 +145,12 @@ static long[] toPrimitive(Long[] array) {
                 result[i] = 0L;
                 continue;
             }
-            result[i] = array[i].longValue();
+            result[i] = array[i];
         }
         return result;
     }
 
-    static int[] toPrimitive(Integer[] array) {
+    private static int[] toPrimitive(Integer[] array) {
         if (array == null) {
             return null;
         }
@@ -160,7 +160,7 @@ static int[] toPrimitive(Integer[] array) {
                 result[i] = 0;
                 continue;
             }
-            result[i] = array[i].intValue();
+            result[i] = array[i];
         }
         return result;
     }
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/FieldType.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/FieldType.java
index c5e95da..742e99d 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/FieldType.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/FieldType.java
@@ -21,22 +21,19 @@ public class FieldType {
     private final String name;
     private final int localHashCode;
     private Class<?> typeClass;
-    private Type genericType;
     private boolean isArray = false;
     private Class<?> arrayContentType = null;
     private boolean hasTypeArguments = false;
     private Class<?>[] typeArguments = null;
-    private Class<?> subType;
 
     FieldType(Class<?> fieldClass, Field field) {
         if (fieldClass == null || field == null) {
             throw new IllegalArgumentException("Field and its class cannot be null");
         }
-        this.subType = fieldClass;
         this.wrapped = field;
         this.name = field.getName();
         this.typeClass = field.getType();
-        this.genericType = field.getGenericType();
+        Type genericType = field.getGenericType();
         this.localHashCode = field.hashCode() + name.hashCode();
 
         if (genericType instanceof Class) {
@@ -44,25 +41,24 @@ public class FieldType {
             this.isArray = classType.isArray();
             this.arrayContentType = classType.getComponentType();
         } else if (genericType instanceof ParameterizedType) {
-            processParametrizedType((ParameterizedType) genericType, subType);
+            processParametrizedType((ParameterizedType) genericType, fieldClass);
         } else if (genericType instanceof GenericArrayType) {
             GenericArrayType typeVarArray = (GenericArrayType) genericType;
             this.isArray = true;
             Type component = typeVarArray.getGenericComponentType();
-            this.arrayContentType = resolveClass(component, subType);
+            this.arrayContentType = resolveClass(component, fieldClass);
             if (component instanceof ParameterizedType) {
-                processParametrizedType((ParameterizedType) component, subType);
+                processParametrizedType((ParameterizedType) component, fieldClass);
             }
         } else if (genericType instanceof TypeVariable<?>) {
             TypeVariable<?> variable = (TypeVariable<?>) genericType;
-            Type resolvedType = getTypeVariableMap(subType).get(variable);
+            Type resolvedType = getTypeVariableMap(fieldClass).get(variable);
             resolvedType = (resolvedType == null) ? resolveBound(variable) : resolvedType;
-            this.genericType = resolvedType;
-            this.typeClass = resolveClass(resolvedType, subType);
+            this.typeClass = resolveClass(resolvedType, fieldClass);
             this.isArray = typeClass.isArray();
             this.arrayContentType = typeClass.getComponentType();
             if (resolvedType instanceof ParameterizedType) {
-                processParametrizedType((ParameterizedType) resolvedType, subType);
+                processParametrizedType((ParameterizedType) resolvedType, fieldClass);
             }
         }
     }
@@ -117,7 +113,7 @@ private Class<?> resolveClass(Type type, Class<?> subType) {
     }
 
     private static Map<TypeVariable<?>, Type> getTypeVariableMap(final Class<?> targetType) {
-        Map<TypeVariable<?>, Type> map = new HashMap<TypeVariable<?>, Type>();
+        Map<TypeVariable<?>, Type> map = new HashMap<>();
         // Populate interfaces
         populateSuperTypeArgs(targetType.getGenericInterfaces(), map);
         // Populate super classes and interfaces
@@ -288,7 +284,7 @@ public int getTypeArgumentCount() {
     public Class<?> getTypeArgument(int index) {
         if (index < 0 || typeArguments == null || index > typeArguments.length) {
             throw new IndexOutOfBoundsException(String.format(
-                    "There are %s type argumens, want to retrieve at %s",
+                    "There are %s type arguments, want to retrieve at %s",
                     (typeArguments == null ? "none" : typeArguments.length), index));
         }
         return typeArguments[index];
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlAdapter.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlAdapter.java
index d7a724a..fae881f 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlAdapter.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlAdapter.java
@@ -177,7 +177,7 @@ T loadFromNode(Element node) {
         return loadFromNode(node, null);
     }
 
-    T loadFromNode(Element node, T instance) {
+    private T loadFromNode(Element node, T instance) {
         if (instance == null) {
             instance = Utils.constructInstance(clazz);
         }
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlField.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlField.java
index 20a60f9..452a7a1 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlField.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/HtmlField.java
@@ -22,7 +22,7 @@
 abstract class HtmlField<T> {
 
     protected final FieldType field;
-    protected final SelectorSpec spec;
+    final SelectorSpec spec;
 
     HtmlField(FieldType field, SelectorSpec spec) {
         this.field = field;
@@ -31,11 +31,11 @@ abstract class HtmlField<T> {
 
     protected abstract void setValue(Jspoon jspoon, Element node, T newInstance);
 
-    protected Elements selectChildren(Element node) {
+    Elements selectChildren(Element node) {
         return node.select(spec.getCssQuery());
     }
 
-    protected Element selectChild(Element parent) {
+    Element selectChild(Element parent) {
         Elements elements = selectChildren(parent);
         int size = elements.size();
         if (size == 0 || size <= spec.getIndex()) {
@@ -56,7 +56,7 @@ static void setFieldOrThrow(FieldType field, Object newInstance, Object value) {
         }
     }
 
-    protected <U> U instanceForNode(Element node, Class<U> fieldType) {
+    <U> U instanceForNode(Element node, Class<U> fieldType) {
         // if clazz.isPrimitive convert it to it's Object counterpart
         fieldType = Utils.wrapToObject(fieldType);
 
@@ -185,7 +185,7 @@ private Double getDouble(String value) {
 
     private Float getFloat(String value) {
         try {
-            return Float.valueOf(NumberFormat.getInstance(spec.getLocale()).parse(value).floatValue());
+            return NumberFormat.getInstance(spec.getLocale()).parse(value).floatValue();
         }
         catch (ParseException e) {
             throw new FloatParseException(value, spec.getLocale());
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/SelectorSpec.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/SelectorSpec.java
index 5ec5b5a..9d6ef04 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/SelectorSpec.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/SelectorSpec.java
@@ -79,8 +79,8 @@ boolean shouldSkipOn(Throwable conversionException) {
         if (conversionException != null && skipAnnotation != null
                 && skipAnnotation.value() != null) {
 
-            for (Class<? extends Throwable> trowableToSkip : skipAnnotation.value()) {
-                if (trowableToSkip.isAssignableFrom(conversionException.getClass())) {
+            for (Class<? extends Throwable> throwableToSkip : skipAnnotation.value()) {
+                if (throwableToSkip.isAssignableFrom(conversionException.getClass())) {
                     return true;
                 }
             }
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/Utils.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/Utils.java
index 4ef235b..5d54865 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/Utils.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/Utils.java
@@ -4,6 +4,7 @@
 import java.lang.reflect.Field;
 import java.math.BigDecimal;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
@@ -17,7 +18,7 @@
 class Utils {
 
     /** Map of class representing primitives and their object counterparts. */
-    private final static Map<Class<?>, Class<?>> PRIMITIVE_WRAPPERS = new HashMap<Class<?>, Class<?>>();
+    private final static Map<Class<?>, Class<?>> PRIMITIVE_WRAPPERS = new HashMap<>();
 
     static {
         PRIMITIVE_WRAPPERS.put(boolean.class, Boolean.class);
@@ -69,9 +70,7 @@ public static List<Field> getAllDeclaredFields(Class<?> target) {
             return declaredFields;
         }
         declaredFields = getAllDeclaredFields(target.getSuperclass());
-        for (Field field : target.getDeclaredFields()) {
-            declaredFields.add(field);
-        }
+        declaredFields.addAll(Arrays.asList(target.getDeclaredFields()));
         return declaredFields;
     }
 
diff --git a/jspoon/src/main/java/pl/droidsonroids/jspoon/annotation/Selector.java b/jspoon/src/main/java/pl/droidsonroids/jspoon/annotation/Selector.java
index a6f48b6..a576c19 100644
--- a/jspoon/src/main/java/pl/droidsonroids/jspoon/annotation/Selector.java
+++ b/jspoon/src/main/java/pl/droidsonroids/jspoon/annotation/Selector.java
@@ -36,7 +36,7 @@
 @Target({ ElementType.TYPE, ElementType.FIELD })
 public @interface Selector {
 
-    static final String NO_VALUE = "NO_VALUE";
+    String NO_VALUE = "NO_VALUE";
 
     /** @return Css query */
     String value();
diff --git a/jspoon/src/test/java/pl/droidsonroids/jspoon/DefaultValueTest.java b/jspoon/src/test/java/pl/droidsonroids/jspoon/DefaultValueTest.java
index 8de2b93..ce20ca3 100644
--- a/jspoon/src/test/java/pl/droidsonroids/jspoon/DefaultValueTest.java
+++ b/jspoon/src/test/java/pl/droidsonroids/jspoon/DefaultValueTest.java
@@ -21,7 +21,7 @@ private static class Model {
         @Selector(value = "p", defValue = "-100") int number;
 
         @Selector(value = "span", defValue = "hello") String text2 = "world";
-        @Selector(value = "span") String text3 = "helloworld";
+        @Selector(value = "span") String text3 = "hello world";
         @Selector(value = "span") String text4;
     }
 
@@ -31,7 +31,7 @@ public void defaultValueTest() {
         Model model = htmlAdapter.fromHtml("<div></div>");
         assertEquals("DEFAULT_VALUE", model.text); // since defValue explicitly defined
         assertEquals("hello", model.text2); // defValue takes precedent as its whatever would be parsed from Element
-        assertEquals("helloworld", model.text3); // no defValue, let's leave whatever is set
+        assertEquals("hello world", model.text3); // no defValue, let's leave whatever is set
         assertNull(model.text4); // should not be set to anything silently if developer did not set a defValue
         assertEquals(-100, model.number);
     }
diff --git a/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritenceTest.java b/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritanceTest.java
similarity index 97%
rename from jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritenceTest.java
rename to jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritanceTest.java
index fc7995c..6d87385 100644
--- a/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritenceTest.java
+++ b/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldInheritanceTest.java
@@ -11,7 +11,7 @@
 
 import pl.droidsonroids.jspoon.annotation.Selector;
 
-public class FieldInheritenceTest {
+public class FieldInheritanceTest {
 
     private final static String HTML_CONTENT = "<div>"
             + "<span class='string'>Test1</span>"
@@ -61,7 +61,7 @@ public void testInheritedFields() {
 
     @SuppressWarnings("static-access")
     @Test
-    public void testDowncastingInstanceFields() {
+    public void testDownCastingInstanceFields() {
         HtmlAdapter<ParentModel> htmlAdapter = jspoon.adapter(ParentModel.class);
         ChildModel subclass = new ChildModel();
         ChildModel model = (ChildModel) htmlAdapter.fromHtml(HTML_CONTENT, subclass);
diff --git a/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldTypeTest.java b/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldTypeTest.java
index 7f1633b..dc1e601 100644
--- a/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldTypeTest.java
+++ b/jspoon/src/test/java/pl/droidsonroids/jspoon/FieldTypeTest.java
@@ -53,7 +53,7 @@ static class StringListModel extends GenericModel<List<String>> {
     }
 
     @Test
-    public void testGenericStringList() throws Exception {
+    public void testGenericStringList() {
         HtmlAdapter<StringListModel> htmlAdapter = Jspoon.create().adapter(StringListModel.class);
         StringListModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.item);
@@ -65,7 +65,7 @@ static class StringModel extends GenericModel<String>{
     }
 
     @Test
-    public void testGenericString() throws Exception {
+    public void testGenericString()  {
         HtmlAdapter<StringModel> htmlAdapter = Jspoon.create().adapter(StringModel.class);
         StringModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.item);
@@ -76,7 +76,7 @@ static class StringArrayModel extends GenericModel<String[]>{
     }
 
     @Test
-    public void testGenericStringArray() throws Exception {
+    public void testGenericStringArray()  {
         HtmlAdapter<StringArrayModel> htmlAdapter = Jspoon.create().adapter(StringArrayModel.class);
         StringArrayModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.item);
@@ -87,7 +87,7 @@ static class PrimitiveArrayModel extends GenericModel<int[]>{
     }
 
     @Test
-    public void testGenericPrimitivesArray() throws Exception {
+    public void testGenericPrimitivesArray()  {
         HtmlAdapter<PrimitiveArrayModel> htmlAdapter = Jspoon.create().adapter(PrimitiveArrayModel.class);
         PrimitiveArrayModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.item);
@@ -99,7 +99,7 @@ static class LinkedListModel {
     }
 
     @Test
-    public void testLinkedList() throws Exception {
+    public void testLinkedList()  {
         HtmlAdapter<LinkedListModel> htmlAdapter = Jspoon.create().adapter(LinkedListModel.class);
         LinkedListModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.list);
@@ -113,7 +113,7 @@ static class RawModel {
     }
 
     @Test
-    public void testRawList() throws Exception {
+    public void testRawList()  {
         HtmlAdapter<RawModel> htmlAdapter = Jspoon.create().adapter(RawModel.class);
         RawModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.list);
@@ -126,7 +126,7 @@ static class WildcardModel {
     }
 
     @Test
-    public void testObjectList() throws Exception {
+    public void testObjectList()  {
         HtmlAdapter<WildcardModel> htmlAdapter = Jspoon.create().adapter(WildcardModel.class);
         WildcardModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.list);
@@ -139,7 +139,7 @@ static class BoundWildcardModel {
     }
 
     @Test
-    public void testStringList() throws Exception {
+    public void testStringList()  {
         HtmlAdapter<BoundWildcardModel> htmlAdapter = Jspoon.create().adapter(BoundWildcardModel.class);
         BoundWildcardModel model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertNotNull(model.list);
@@ -162,7 +162,7 @@ static class ModelBigDecimal extends ModelGeneric<BigDecimal> {
     }
 
     @Test
-    public void genericFieldsTest() throws Exception {
+    public void genericFieldsTest()  {
         @SuppressWarnings("rawtypes")
         HtmlAdapter<ModelGeneric> htmlAdapter = jspoon.adapter(ModelGeneric.class);
         ModelGeneric<?> model = htmlAdapter.fromHtml(HTML_CONTENT);
@@ -174,7 +174,7 @@ public void genericFieldsTest() throws Exception {
     }
 
     @Test
-    public void genericStringFieldsTest() throws Exception {
+    public void genericStringFieldsTest()  {
         HtmlAdapter<ModelString> htmlAdapter = jspoon.adapter(ModelString.class);
         ModelString model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertListEquals(model.justList, "3366", "-4", "9.98");
@@ -185,7 +185,7 @@ public void genericStringFieldsTest() throws Exception {
     }
 
     @Test
-    public void genericBigDecimalFieldsTest() throws Exception {
+    public void genericBigDecimalFieldsTest()  {
         HtmlAdapter<ModelBigDecimal> htmlAdapter = jspoon.adapter(ModelBigDecimal.class);
         ModelBigDecimal model = htmlAdapter.fromHtml(HTML_CONTENT);
         assertListEquals(model.justList, "3366", "-4", "9.98");
diff --git a/jspoon/src/test/java/pl/droidsonroids/jspoon/HtmlAdapterTest.java b/jspoon/src/test/java/pl/droidsonroids/jspoon/HtmlAdapterTest.java
index cf45585..a2d0a95 100644
--- a/jspoon/src/test/java/pl/droidsonroids/jspoon/HtmlAdapterTest.java
+++ b/jspoon/src/test/java/pl/droidsonroids/jspoon/HtmlAdapterTest.java
@@ -13,14 +13,14 @@
 public class HtmlAdapterTest {
 
     private static final String HTML_CONTENT = "<div>"
-            + "<span id='firstname'>John</span>"
-            + "<span id='lastname'>Doe</span>"
+            + "<span id='firstName'>John</span>"
+            + "<span id='lastName'>Doe</span>"
             + "</div>";
 
     private static class Profile {
 
-        @Selector(value = "#firstname") String firstname;
-        @Selector(value = "#lastname") String lastname;
+        @Selector(value = "#firstName") String firstName;
+        @Selector(value = "#lastName") String lastName;
     }
 
     private Jspoon jspoon;
@@ -38,8 +38,8 @@ public void testFromInputStream() throws IOException {
                      = new ByteArrayInputStream(HTML_CONTENT.getBytes())) {
 
             Profile profile = adapter.fromInputStream(inputStream, baseUrl);
-            assertEquals("John", profile.firstname);
-            assertEquals("Doe", profile.lastname);
+            assertEquals("John", profile.firstName);
+            assertEquals("Doe", profile.lastName);
         }
     }
 }
diff --git a/retrofit-converter-jspoon/src/main/java/pl/droidsonroids/retrofit2/JspoonResponseBodyConverter.java b/retrofit-converter-jspoon/src/main/java/pl/droidsonroids/retrofit2/JspoonResponseBodyConverter.java
index 65de336..db80aa5 100644
--- a/retrofit-converter-jspoon/src/main/java/pl/droidsonroids/retrofit2/JspoonResponseBodyConverter.java
+++ b/retrofit-converter-jspoon/src/main/java/pl/droidsonroids/retrofit2/JspoonResponseBodyConverter.java
@@ -3,7 +3,6 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
 
 import okhttp3.HttpUrl;
 import okhttp3.MediaType;
diff --git a/retrofit-converter-jspoon/src/test/java/pl/droidsonroids/retrofit2/JspoonConverterFactoryTest.java b/retrofit-converter-jspoon/src/test/java/pl/droidsonroids/retrofit2/JspoonConverterFactoryTest.java
index 535e6ec..7fb2e26 100644
--- a/retrofit-converter-jspoon/src/test/java/pl/droidsonroids/retrofit2/JspoonConverterFactoryTest.java
+++ b/retrofit-converter-jspoon/src/test/java/pl/droidsonroids/retrofit2/JspoonConverterFactoryTest.java
@@ -9,7 +9,6 @@
 
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Type;
-import java.util.List;
 
 import org.junit.Test;
 
diff --git a/versions.gradle b/versions.gradle
index 34f1a0a..2fc483b 100644
--- a/versions.gradle
+++ b/versions.gradle
@@ -8,7 +8,7 @@ ext {
             constraint   : '1.1.2',
             jsoup        : '1.11.3',
             junit        : '4.12',
-            kotlin       : '1.2.51',
+            kotlin       : '1.2.60',
             mockito      : '2.20.1',
             mockwebserver: '3.11.0',
             retrofit     : '2.4.0',