diff --git a/README.md b/README.md
index 0e83d16..715442d 100644
--- a/README.md
+++ b/README.md
@@ -29,8 +29,8 @@ import 'package:webfeed/webfeed.dart';
 
 To parse string into `RssFeed` object use:
 ```
-var rssFeed = new RssFeed.parse(xmlString); // for parsing RSS feed
-var atomFeed = new AtomFeed.parse(xmlString); // for parsing Atom feed
+var rssFeed = RssFeed.parse(xmlString); // for parsing RSS feed
+var atomFeed = AtomFeed.parse(xmlString); // for parsing Atom feed
 ```
 
 ### Preview
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 0323d68..2c9d809 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,7 +1,4 @@
 analyzer:
-  language:
-    enablePreviewDart2: true
-  strong-mode: true
   errors:
     unused_import: error
     unused_local_variable: error
@@ -35,3 +32,4 @@ linter:
      - prefer_typing_uninitialized_variables
      - slash_for_doc_comments
      - type_init_formals
+     - unnecessary_new
diff --git a/lib/domain/atom_feed.dart b/lib/domain/atom_feed.dart
index 59a607a..06d1b2c 100644
--- a/lib/domain/atom_feed.dart
+++ b/lib/domain/atom_feed.dart
@@ -45,7 +45,7 @@ class AtomFeed {
     try {
       feedElement = document.findElements("feed").first;
     } on StateError {
-      throw new ArgumentError("feed not found");
+      throw ArgumentError("feed not found");
     }
 
     return AtomFeed(
diff --git a/lib/domain/atom_generator.dart b/lib/domain/atom_generator.dart
index 7fd8579..14eb70d 100644
--- a/lib/domain/atom_generator.dart
+++ b/lib/domain/atom_generator.dart
@@ -14,6 +14,6 @@ class AtomGenerator {
     var uri = element.getAttribute("uri");
     var version = element.getAttribute("version");
     var value = element.text;
-    return new AtomGenerator(uri, version, value);
+    return AtomGenerator(uri, version, value);
   }
 }
diff --git a/lib/domain/media/category.dart b/lib/domain/media/category.dart
index 4796cd7..9029738 100644
--- a/lib/domain/media/category.dart
+++ b/lib/domain/media/category.dart
@@ -15,7 +15,7 @@ class Category {
     if (element == null) {
       return null;
     }
-    return new Category(
+    return Category(
       scheme: element.getAttribute("scheme"),
       label: element.getAttribute("label"),
       value: element.text,
diff --git a/lib/domain/media/community.dart b/lib/domain/media/community.dart
index 8be70b9..6f1c685 100644
--- a/lib/domain/media/community.dart
+++ b/lib/domain/media/community.dart
@@ -19,14 +19,14 @@ class Community {
     if (element == null) {
       return null;
     }
-    return new Community(
-      starRating: new StarRating.parse(
+    return Community(
+      starRating: StarRating.parse(
         findElementOrNull(element, "media:starRating"),
       ),
-      statistics: new Statistics.parse(
+      statistics: Statistics.parse(
         findElementOrNull(element, "media:statistics"),
       ),
-      tags: new Tags.parse(
+      tags: Tags.parse(
         findElementOrNull(element, "media:tags"),
       ),
     );
diff --git a/lib/domain/media/content.dart b/lib/domain/media/content.dart
index 3a4ebaa..e580e5f 100644
--- a/lib/domain/media/content.dart
+++ b/lib/domain/media/content.dart
@@ -34,7 +34,7 @@ class Content {
   });
 
   factory Content.parse(XmlElement element) {
-    return new Content(
+    return Content(
       url: element.getAttribute("url"),
       type: element.getAttribute("type"),
       fileSize: int.tryParse(element.getAttribute("fileSize") ?? "0"),
diff --git a/lib/domain/media/copyright.dart b/lib/domain/media/copyright.dart
index 1cad059..f4b5b8b 100644
--- a/lib/domain/media/copyright.dart
+++ b/lib/domain/media/copyright.dart
@@ -13,7 +13,7 @@ class Copyright {
     if (element == null) {
       return null;
     }
-    return new Copyright(
+    return Copyright(
       url: element.getAttribute("url"),
       value: element.text,
     );
diff --git a/lib/domain/media/credit.dart b/lib/domain/media/credit.dart
index 70a5e50..212dac1 100644
--- a/lib/domain/media/credit.dart
+++ b/lib/domain/media/credit.dart
@@ -12,7 +12,7 @@ class Credit {
   });
 
   factory Credit.parse(XmlElement element) {
-    return new Credit(
+    return Credit(
       role: element.getAttribute("role"),
       scheme: element.getAttribute("scheme"),
       value: element.text,
diff --git a/lib/domain/media/description.dart b/lib/domain/media/description.dart
index ba6f0e0..17bb1cb 100644
--- a/lib/domain/media/description.dart
+++ b/lib/domain/media/description.dart
@@ -13,7 +13,7 @@ class Description {
     if (element == null) {
       return null;
     }
-    return new Description(
+    return Description(
       type: element.getAttribute("type"),
       value: element.text,
     );
diff --git a/lib/domain/media/embed.dart b/lib/domain/media/embed.dart
index 1cca476..6fc84ea 100644
--- a/lib/domain/media/embed.dart
+++ b/lib/domain/media/embed.dart
@@ -18,12 +18,12 @@ class Embed {
     if (element == null) {
       return null;
     }
-    return new Embed(
+    return Embed(
       url: element.getAttribute("url"),
       width: int.tryParse(element.getAttribute("width") ?? "0"),
       height: int.tryParse(element.getAttribute("height") ?? "0"),
       params: element.findElements("media:param").map((e) {
-        return new Param.parse(e);
+        return Param.parse(e);
       }).toList(),
     );
   }
diff --git a/lib/domain/media/group.dart b/lib/domain/media/group.dart
index 39e4153..2be5efd 100644
--- a/lib/domain/media/group.dart
+++ b/lib/domain/media/group.dart
@@ -22,17 +22,17 @@ class Group {
     if (element == null) {
       return null;
     }
-    return new Group(
+    return Group(
       contents: element.findElements("media:content").map((e) {
-        return new Content.parse(e);
+        return Content.parse(e);
       }).toList(),
       credits: element.findElements("media:credit").map((e) {
-        return new Credit.parse(e);
+        return Credit.parse(e);
       }).toList(),
-      category: new Category.parse(
+      category: Category.parse(
         findElementOrNull(element, "media:category"),
       ),
-      rating: new Rating.parse(
+      rating: Rating.parse(
         findElementOrNull(element, "media:rating"),
       ),
     );
diff --git a/lib/domain/media/hash.dart b/lib/domain/media/hash.dart
index 72ce859..01ad1c3 100644
--- a/lib/domain/media/hash.dart
+++ b/lib/domain/media/hash.dart
@@ -13,7 +13,7 @@ class Hash {
     if (element == null) {
       return null;
     }
-    return new Hash(
+    return Hash(
       algo: element.getAttribute("algo"),
       value: element.text,
     );
diff --git a/lib/domain/media/license.dart b/lib/domain/media/license.dart
index c52a8c6..75db98e 100644
--- a/lib/domain/media/license.dart
+++ b/lib/domain/media/license.dart
@@ -15,7 +15,7 @@ class License {
     if (element == null) {
       return null;
     }
-    return new License(
+    return License(
       type: element.getAttribute("type"),
       href: element.getAttribute("href"),
       value: element.text,
diff --git a/lib/domain/media/media.dart b/lib/domain/media/media.dart
index 39915b3..fc37773 100644
--- a/lib/domain/media/media.dart
+++ b/lib/domain/media/media.dart
@@ -78,48 +78,48 @@ class Media {
   });
 
   factory Media.parse(XmlElement element) {
-    return new Media(
-      group: new Group.parse(
+    return Media(
+      group: Group.parse(
         findElementOrNull(element, "media:group"),
       ),
       contents: element.findElements("media:content").map((e) {
-        return new Content.parse(e);
+        return Content.parse(e);
       }).toList(),
       credits: element.findElements("media:credit").map((e) {
-        return new Credit.parse(e);
+        return Credit.parse(e);
       }).toList(),
-      category: new Category.parse(
+      category: Category.parse(
         findElementOrNull(element, "media:category"),
       ),
-      rating: new Rating.parse(
+      rating: Rating.parse(
         findElementOrNull(element, "media:rating"),
       ),
-      title: new Title.parse(
+      title: Title.parse(
         findElementOrNull(element, "media:title"),
       ),
-      description: new Description.parse(
+      description: Description.parse(
         findElementOrNull(element, "media:description"),
       ),
       keywords: findElementOrNull(element, "media:keywords")?.text,
       thumbnails: element.findElements("media:thumbnail").map((e) {
-        return new Thumbnail.parse(e);
+        return Thumbnail.parse(e);
       }).toList(),
-      hash: new Hash.parse(
+      hash: Hash.parse(
         findElementOrNull(element, "media:hash"),
       ),
-      player: new Player.parse(
+      player: Player.parse(
         findElementOrNull(element, "media:player"),
       ),
-      copyright: new Copyright.parse(
+      copyright: Copyright.parse(
         findElementOrNull(element, "media:copyright"),
       ),
-      text: new Text.parse(
+      text: Text.parse(
         findElementOrNull(element, "media:text"),
       ),
-      restriction: new Restriction.parse(
+      restriction: Restriction.parse(
         findElementOrNull(element, "media:restriction"),
       ),
-      community: new Community.parse(
+      community: Community.parse(
         findElementOrNull(element, "media:community"),
       ),
       comments: findElementOrNull(element, "media:comments")
@@ -128,7 +128,7 @@ class Media {
             return e.text;
           })?.toList() ??
           [],
-      embed: new Embed.parse(
+      embed: Embed.parse(
         findElementOrNull(element, "media:embed"),
       ),
       responses: findElementOrNull(element, "media:responses")
@@ -143,25 +143,25 @@ class Media {
             return e.text;
           })?.toList() ??
           [],
-      status: new Status.parse(
+      status: Status.parse(
         findElementOrNull(element, "media:status"),
       ),
       prices: element.findElements("media:price").map((e) {
-        return new Price.parse(e);
+        return Price.parse(e);
       }).toList(),
-      license: new License.parse(
+      license: License.parse(
         findElementOrNull(element, "media:license"),
       ),
-      peerLink: new PeerLink.parse(
+      peerLink: PeerLink.parse(
         findElementOrNull(element, "media:peerLink"),
       ),
-      rights: new Rights.parse(
+      rights: Rights.parse(
         findElementOrNull(element, "media:rights"),
       ),
       scenes: findElementOrNull(element, "media:scenes")
               ?.findElements("media:scene")
               ?.map((e) {
-            return new Scene.parse(e);
+            return Scene.parse(e);
           })?.toList() ??
           [],
     );
diff --git a/lib/domain/media/param.dart b/lib/domain/media/param.dart
index 175e6b8..f6299c8 100644
--- a/lib/domain/media/param.dart
+++ b/lib/domain/media/param.dart
@@ -13,7 +13,7 @@ class Param {
     if (element == null) {
       return null;
     }
-    return new Param(
+    return Param(
       name: element.getAttribute("name"),
       value: element.text,
     );
diff --git a/lib/domain/media/peer_link.dart b/lib/domain/media/peer_link.dart
index 6c51a17..dd06d90 100644
--- a/lib/domain/media/peer_link.dart
+++ b/lib/domain/media/peer_link.dart
@@ -15,7 +15,7 @@ class PeerLink {
     if (element == null) {
       return null;
     }
-    return new PeerLink(
+    return PeerLink(
       type: element.getAttribute("type"),
       href: element.getAttribute("href"),
       value: element.text,
diff --git a/lib/domain/media/player.dart b/lib/domain/media/player.dart
index 23d5e7a..14b2a54 100644
--- a/lib/domain/media/player.dart
+++ b/lib/domain/media/player.dart
@@ -17,7 +17,7 @@ class Player {
     if (element == null) {
       return null;
     }
-    return new Player(
+    return Player(
       url: element.getAttribute("url"),
       width: int.tryParse(element.getAttribute("width") ?? "0"),
       height: int.tryParse(element.getAttribute("height") ?? "0"),
diff --git a/lib/domain/media/price.dart b/lib/domain/media/price.dart
index 6da075b..6b930ce 100644
--- a/lib/domain/media/price.dart
+++ b/lib/domain/media/price.dart
@@ -14,7 +14,7 @@ class Price {
   });
 
   factory Price.parse(XmlElement element) {
-    return new Price(
+    return Price(
       price: double.tryParse(element.getAttribute("price") ?? "0"),
       type: element.getAttribute("type"),
       info: element.getAttribute("info"),
diff --git a/lib/domain/media/rating.dart b/lib/domain/media/rating.dart
index 77c2b12..5a53f88 100644
--- a/lib/domain/media/rating.dart
+++ b/lib/domain/media/rating.dart
@@ -13,7 +13,7 @@ class Rating {
     if (element == null) {
       return null;
     }
-    return new Rating(
+    return Rating(
       scheme: element.getAttribute("scheme"),
       value: element.text,
     );
diff --git a/lib/domain/media/restriction.dart b/lib/domain/media/restriction.dart
index 4aa56bd..59a5339 100644
--- a/lib/domain/media/restriction.dart
+++ b/lib/domain/media/restriction.dart
@@ -15,7 +15,7 @@ class Restriction {
     if (element == null) {
       return null;
     }
-    return new Restriction(
+    return Restriction(
       relationship: element.getAttribute("relationship"),
       type: element.getAttribute("type"),
       value: element.text,
diff --git a/lib/domain/media/rights.dart b/lib/domain/media/rights.dart
index eb00d4d..38feed3 100644
--- a/lib/domain/media/rights.dart
+++ b/lib/domain/media/rights.dart
@@ -11,7 +11,7 @@ class Rights {
     if (element == null) {
       return null;
     }
-    return new Rights(
+    return Rights(
       status: element.getAttribute("status"),
     );
   }
diff --git a/lib/domain/media/scene.dart b/lib/domain/media/scene.dart
index f032e1c..1336dc9 100644
--- a/lib/domain/media/scene.dart
+++ b/lib/domain/media/scene.dart
@@ -18,7 +18,7 @@ class Scene {
     if (element == null) {
       return null;
     }
-    return new Scene(
+    return Scene(
       title: findElementOrNull(element, "sceneTitle")?.text,
       description: findElementOrNull(element, "sceneDescription")?.text,
       startTime: findElementOrNull(element, "sceneStartTime")?.text,
diff --git a/lib/domain/media/star_rating.dart b/lib/domain/media/star_rating.dart
index ae4c400..9fc456b 100644
--- a/lib/domain/media/star_rating.dart
+++ b/lib/domain/media/star_rating.dart
@@ -14,7 +14,7 @@ class StarRating {
   });
 
   factory StarRating.parse(XmlElement element) {
-    return new StarRating(
+    return StarRating(
       average: double.tryParse(element.getAttribute("average") ?? "0"),
       count: int.tryParse(element.getAttribute("count") ?? "0"),
       min: int.tryParse(element.getAttribute("min") ?? "0"),
diff --git a/lib/domain/media/statistics.dart b/lib/domain/media/statistics.dart
index d93461f..d30b025 100644
--- a/lib/domain/media/statistics.dart
+++ b/lib/domain/media/statistics.dart
@@ -10,7 +10,7 @@ class Statistics {
   });
 
   factory Statistics.parse(XmlElement element) {
-    return new Statistics(
+    return Statistics(
       views: int.tryParse(element.getAttribute("views") ?? "0"),
       favorites: int.tryParse(element.getAttribute("favorites") ?? "0"),
     );
diff --git a/lib/domain/media/status.dart b/lib/domain/media/status.dart
index 3071a09..17200ac 100644
--- a/lib/domain/media/status.dart
+++ b/lib/domain/media/status.dart
@@ -13,7 +13,7 @@ class Status {
     if (element == null) {
       return null;
     }
-    return new Status(
+    return Status(
       state: element.getAttribute("state"),
       reason: element.getAttribute("reason"),
     );
diff --git a/lib/domain/media/tags.dart b/lib/domain/media/tags.dart
index c7001a7..3617a0a 100644
--- a/lib/domain/media/tags.dart
+++ b/lib/domain/media/tags.dart
@@ -13,7 +13,7 @@ class Tags {
     if (element == null) {
       return null;
     }
-    return new Tags(
+    return Tags(
       tags: element.text,
       weight: int.tryParse(element.getAttribute("weight") ?? "1"),
     );
diff --git a/lib/domain/media/text.dart b/lib/domain/media/text.dart
index 1ff886b..702e934 100644
--- a/lib/domain/media/text.dart
+++ b/lib/domain/media/text.dart
@@ -19,7 +19,7 @@ class Text {
     if (element == null) {
       return null;
     }
-    return new Text(
+    return Text(
       type: element.getAttribute("type"),
       lang: element.getAttribute("lang"),
       start: element.getAttribute("start"),
diff --git a/lib/domain/media/thumbnail.dart b/lib/domain/media/thumbnail.dart
index 8adce3b..0c3f31c 100644
--- a/lib/domain/media/thumbnail.dart
+++ b/lib/domain/media/thumbnail.dart
@@ -14,7 +14,7 @@ class Thumbnail {
   });
 
   factory Thumbnail.parse(XmlElement element) {
-    return new Thumbnail(
+    return Thumbnail(
       url: element.getAttribute("url"),
       width: element.getAttribute("width"),
       height: element.getAttribute("height"),
diff --git a/lib/domain/media/title.dart b/lib/domain/media/title.dart
index 8c875a6..49482d6 100644
--- a/lib/domain/media/title.dart
+++ b/lib/domain/media/title.dart
@@ -13,7 +13,7 @@ class Title {
     if (element == null) {
       return null;
     }
-    return new Title(
+    return Title(
       type: element.getAttribute("type"),
       value: element.text,
     );
diff --git a/lib/domain/rss_content.dart b/lib/domain/rss_content.dart
index ded57bc..5dacce1 100644
--- a/lib/domain/rss_content.dart
+++ b/lib/domain/rss_content.dart
@@ -1,6 +1,6 @@
 import 'package:xml/xml.dart';
 
-final _imagesRegExp = new RegExp(
+final _imagesRegExp = RegExp(
   "<img\\s.*?src=(?:'|\")([^'\">]+)(?:'|\")",
   multiLine: true,
   caseSensitive: false,
diff --git a/test/atom_test.dart b/test/atom_test.dart
index 70b6b0f..f3b9c12 100644
--- a/test/atom_test.dart
+++ b/test/atom_test.dart
@@ -6,18 +6,18 @@ import 'package:webfeed/webfeed.dart';
 
 void main() {
   test("parse Invalid.xml", () {
-    var xmlString = new File("test/xml/Invalid.xml").readAsStringSync();
+    var xmlString = File("test/xml/Invalid.xml").readAsStringSync();
 
     try {
-      new AtomFeed.parse(xmlString);
+      AtomFeed.parse(xmlString);
       fail("Should throw Argument Error");
     } on ArgumentError {}
   });
 
   test("parse Atom.xml", () {
-    var xmlString = new File("test/xml/Atom.xml").readAsStringSync();
+    var xmlString = File("test/xml/Atom.xml").readAsStringSync();
 
-    var feed = new AtomFeed.parse(xmlString);
+    var feed = AtomFeed.parse(xmlString);
 
     expect(feed.id, "foo-bar-id");
     expect(feed.title, "Foo bar news");
@@ -89,9 +89,9 @@ void main() {
     expect(item.rights, "This is rights 1");
   });
   test("parse Atom-Media.xml", () {
-    var xmlString = new File("test/xml/Atom-Media.xml").readAsStringSync();
+    var xmlString = File("test/xml/Atom-Media.xml").readAsStringSync();
 
-    var feed = new AtomFeed.parse(xmlString);
+    var feed = AtomFeed.parse(xmlString);
     expect(feed.id, "foo-bar-id");
     expect(feed.title, "Foo bar news");
     expect(feed.updated, DateTime.utc(2018, 4, 6, 13, 2, 46));
diff --git a/test/rss_test.dart b/test/rss_test.dart
index b97559e..16fc91e 100644
--- a/test/rss_test.dart
+++ b/test/rss_test.dart
@@ -8,17 +8,17 @@ import 'package:webfeed/webfeed.dart';
 
 void main() {
   test("parse Invalid.xml", () {
-    var xmlString = new File("test/xml/Invalid.xml").readAsStringSync();
+    var xmlString = File("test/xml/Invalid.xml").readAsStringSync();
 
     try {
-      new RssFeed.parse(xmlString);
+      RssFeed.parse(xmlString);
       fail("Should throw Argument Error");
     } on ArgumentError {}
   });
   test("parse RSS.xml", () {
-    var xmlString = new File("test/xml/RSS.xml").readAsStringSync();
+    var xmlString = File("test/xml/RSS.xml").readAsStringSync();
 
-    var feed = new RssFeed.parse(xmlString);
+    var feed = RssFeed.parse(xmlString);
 
     expect(feed.title, "News - Foo bar News");
     expect(feed.description,
@@ -90,9 +90,9 @@ void main() {
         feed.items.first.content.images.first, "https://test.com/image_link");
   });
   test("parse RSS-Media.xml", () {
-    var xmlString = new File("test/xml/RSS-Media.xml").readAsStringSync();
+    var xmlString = File("test/xml/RSS-Media.xml").readAsStringSync();
 
-    var feed = new RssFeed.parse(xmlString);
+    var feed = RssFeed.parse(xmlString);
     expect(feed.title, "Song Site");
     expect(
         feed.description, "Media RSS example with new fields added in v1.5.0");