diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index 7916361..1ee94ac 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -24,7 +24,7 @@ jobs:
         run: dart analyze --fatal-warnings --fatal-infos --verbose .
 
       - name: Activate code coverage
-        run: pub global activate dart_coveralls
+        run: dart pub global activate dart_coveralls
 
       - name: Analyze code coverage
         run: dart_coveralls report --debug --exclude-test-files --token=$COVERALLS_REPO_TOKEN test/all_test.dart
@@ -35,7 +35,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        sdk: [stable, 2.12.0, 2.13.1]
+        sdk: [stable, 2.17.0]
     steps:
       - uses: actions/checkout@v2
       - uses: dart-lang/setup-dart@v1.0
@@ -59,4 +59,4 @@ jobs:
         run: dart pub get
 
       - name: Publish project
-        run: pub publish --dry-run
+        run: dart pub publish --dry-run
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ec74cc9..f430ec3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 2.0.1
+
+* Update Dart DSK version up to 2.17.0
+* Add LatLng.toString, Location.toString
+
 ## 2.0.0
 
 * BREAKING CHANGE: This version requires Dart SDK 2.12.0 or later (null safety).
diff --git a/README.md b/README.md
index 3579466..8c37f5a 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ In your dart/flutter project add the dependency:
 ```
  dependencies:
    ...
-   maps_toolkit: ^2.0.0
+   maps_toolkit: ^2.0.1
 ```
 
 A simple usage example:
@@ -32,6 +32,13 @@ main() {
     LatLng(51.5073509, -0.1277583),
     LatLng(48.856614, 2.3522219)
   );
+
+  final p1 = LatLng(45.153474463955796, 39.33852195739747);
+  final p2 = LatLng(45.153474463955796, 39.33972358703614);
+  final p3 = LatLng(45.15252112936569, 39.33972358703614);
+  final p4 = LatLng(45.1525022138355, 39.3385460972786);
+
+  val areaInSquareMeters = SphericalUtil.computeArea([p1, p2, p3, p4, p1]);
 }
 ```
 
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 4532cbb..028f08f 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,4 +1,4 @@
-include: package:pedantic/analysis_options.yaml
+include: package:lints/recommended.yaml
 
 linter:
   rules:
@@ -12,7 +12,7 @@ linter:
     - avoid_bool_literals_in_conditional_expressions
     - avoid_catches_without_on_clauses
     - avoid_catching_errors
-    - avoid_classes_with_only_static_members
+    # - avoid_classes_with_only_static_members
     - avoid_double_and_int_checks
     - avoid_empty_else
     - avoid_field_initializers_in_const_classes
@@ -150,4 +150,4 @@ linter:
 
 analyzer:
   strong-mode:
-    implicit-casts: false
\ No newline at end of file
+    implicit-casts: false
diff --git a/lib/src/latlng.dart b/lib/src/latlng.dart
index a76f245..b1eae7d 100644
--- a/lib/src/latlng.dart
+++ b/lib/src/latlng.dart
@@ -28,7 +28,5 @@ class LatLng {
   }
 
   @override
-  String toString() {
-    return 'Lat: ${latitude}, Lng: ${longitude}';
-  }
+  String toString() => 'Lat: $latitude, Lng: $longitude';
 }
diff --git a/lib/src/location.dart b/lib/src/location.dart
index 919595b..127f9c9 100644
--- a/lib/src/location.dart
+++ b/lib/src/location.dart
@@ -12,6 +12,9 @@ class Location {
     required this.time,
   });
 
+  @override
+  String toString() => 'LatLng: $latlng, Accuracy: $accuracy, Time: $time';
+
 //  factory LatLng.fromMap(Map<String, double> dataMap) {
 //    return LatLng(dataMap['latitude'], dataMap['longitude']);
 //  }
diff --git a/lib/src/polygon_util.dart b/lib/src/polygon_util.dart
index 1880d7c..d131aaa 100644
--- a/lib/src/polygon_util.dart
+++ b/lib/src/polygon_util.dart
@@ -112,7 +112,7 @@ class PolygonUtil {
     return (nIntersect & 1) != 0;
   }
 
-  static const num DEFAULT_TOLERANCE = 0.1; // meters.
+  static const num defaultTolerance = 0.1; // meters.
 
   /// Computes whether the given point lies on or near the edge of a polygon,
   /// within a specified tolerance in meters. The polygon edge is composed of
@@ -121,7 +121,7 @@ class PolygonUtil {
   /// between the first point and the last point is included.
   static bool isLocationOnEdge(
           LatLng point, List<LatLng> polygon, bool geodesic,
-          {num tolerance = DEFAULT_TOLERANCE}) =>
+          {num tolerance = defaultTolerance}) =>
       _isLocationOnEdgeOrPath(point, polygon, true, geodesic, tolerance);
 
   /// Computes whether the given point lies on or near a polyline, within a
@@ -131,7 +131,7 @@ class PolygonUtil {
   /// and the last point is not included.
   static bool isLocationOnPath(
           LatLng point, List<LatLng> polyline, bool geodesic,
-          {num tolerance = DEFAULT_TOLERANCE}) =>
+          {num tolerance = defaultTolerance}) =>
       _isLocationOnEdgeOrPath(point, polyline, false, geodesic, tolerance);
 
   static bool _isLocationOnEdgeOrPath(LatLng point, List<LatLng> poly,
@@ -157,7 +157,7 @@ class PolygonUtil {
   /// ...,
   /// poly.size()-2 if between poly[poly.size() - 2] and poly[poly.size() - 1]
   static int locationIndexOnPath(LatLng point, List<LatLng> poly, bool geodesic,
-          {num tolerance = DEFAULT_TOLERANCE}) =>
+          {num tolerance = defaultTolerance}) =>
       locationIndexOnEdgeOrPath(point, poly, false, geodesic, tolerance);
 
   /// Computes whether (and where) a given point lies on or near a polyline,
@@ -336,12 +336,12 @@ class PolygonUtil {
     if (closedPolygon) {
       // Add a small offset to the last point for Douglas-Peucker on polygons
       // (see #201)
-      const OFFSET = 0.00000000001;
+      const offset = 0.00000000001;
       lastPoint = poly.last;
       // LatLng.latitude and .longitude are immutable, so replace the last point
       poly.removeLast();
       poly.add(
-          LatLng(lastPoint.latitude + OFFSET, lastPoint.longitude + OFFSET));
+          LatLng(lastPoint.latitude + offset, lastPoint.longitude + offset));
     }
 
     int idx;
diff --git a/pubspec.yaml b/pubspec.yaml
index 90b3efb..23e8132 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,13 +1,13 @@
 name: maps_toolkit
 description: Maps toolkit - geo-measurements utils - area of polygon, distance between point, heading and offset between points (port of SphericalUtil, PolyUtil from `android-maps-utils`).
-version: 2.0.0
+version: 2.0.1
 homepage: https://github.com/kb0/maps_toolkit/
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.17.0 <3.0.0"
 
 dependencies:
 
 dev_dependencies:
-  pedantic: '>=1.8.0 <3.0.0'
-  test: any
+  lints: ^2.0.0
+  test: ^1.21.0
diff --git a/test/maps_toolkit_test.dart b/test/maps_toolkit_test.dart
index 1894d40..1ca00a1 100644
--- a/test/maps_toolkit_test.dart
+++ b/test/maps_toolkit_test.dart
@@ -364,6 +364,13 @@ void main() {
         SphericalUtil.computeArea([right, down, front, up, right]),
         closeTo(
             pi * SphericalUtil.earthRadius * SphericalUtil.earthRadius, .4));
+
+    final p1 = LatLng(45.153474463955796, 39.33852195739747);
+    final p2 = LatLng(45.153474463955796, 39.33972358703614);
+    final p3 = LatLng(45.15252112936569, 39.33972358703614);
+    final p4 = LatLng(45.1525022138355, 39.3385460972786);
+
+    expect(SphericalUtil.computeArea([p1, p2, p3, p4, p1]), closeTo(9987, 1));
   });
 
   test('testComputeSignedArea', () {
diff --git a/test/polygon_util_test.dart b/test/polygon_util_test.dart
index deaae1f..7f5734f 100644
--- a/test/polygon_util_test.dart
+++ b/test/polygon_util_test.dart
@@ -135,10 +135,10 @@ void main() {
   });
 
   test('simplify polygon', () {
-    const POLYGON_LINE =
+    const polygonLine =
         'elfjD~a}uNOnFN~Em@fJv@tEMhGDjDe@hG^nF??@lA?n@IvAC`Ay@A{@DwCA{CF_EC{CEi@PBTFDJBJ?V?n@?D@?A@?@?F?F?LAf@?n@@`@@T@~@FpA?fA?p@?r@?vAH`@OR@^ETFJCLD?JA^?J?P?fAC`B@d@?b@A\\@`@Ad@@\\?`@?f@?V?H?DD@DDBBDBD?D?B?B@B@@@B@B@B@D?D?JAF@H@FCLADBDBDCFAN?b@Af@@x@@';
 
-    final line = PolygonUtil.decode(POLYGON_LINE);
+    final line = PolygonUtil.decode(polygonLine);
     expect(line.length, equals(95));
 
     final data = [
@@ -191,10 +191,10 @@ void main() {
   });
 
   test('simplify polygon - oval', () {
-    const POLYGON_OVAL =
+    const polygonOval =
         '}wgjDxw_vNuAd@}AN{A]w@_Au@kAUaA?{@Ke@@_@C]D[FULWFOLSNMTOVOXO\\I\\CX?VJXJTDTNXTVVLVJ`@FXA\\AVLZBTATBZ@ZAT?\\?VFT@XGZ';
 
-    final oval = PolygonUtil.decode(POLYGON_OVAL);
+    final oval = PolygonUtil.decode(polygonOval);
     expect(PolygonUtil.isClosedPolygon(oval), equals(false));
 
     final simplifiedOval10 = PolygonUtil.simplify(oval, 10);