diff --git a/lib/src/geojson.dart b/lib/src/geojson.dart
index 92c2bcc..6d72f69 100644
--- a/lib/src/geojson.dart
+++ b/lib/src/geojson.dart
@@ -434,7 +434,7 @@ abstract class GeometryType<T> extends GeometryObject {
 }
 
 /// Point, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.2
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class Point extends GeometryType<Position> {
   Point({BBox? bbox, required Position coordinates})
       : super.withType(coordinates, GeoJSONObjectType.point, bbox: bbox);
@@ -460,7 +460,7 @@ class Point extends GeometryType<Position> {
 }
 
 /// MultiPoint, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.3
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class MultiPoint extends GeometryType<List<Position>> {
   MultiPoint({BBox? bbox, List<Position> coordinates = const []})
       : super.withType(coordinates, GeoJSONObjectType.multiPoint, bbox: bbox);
@@ -485,7 +485,7 @@ class MultiPoint extends GeometryType<List<Position>> {
 }
 
 /// LineString, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.4
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class LineString extends GeometryType<List<Position>> {
   LineString({BBox? bbox, List<Position> coordinates = const []})
       : super.withType(coordinates, GeoJSONObjectType.lineString, bbox: bbox);
@@ -509,7 +509,7 @@ class LineString extends GeometryType<List<Position>> {
 }
 
 /// MultiLineString, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.5
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class MultiLineString extends GeometryType<List<List<Position>>> {
   MultiLineString({BBox? bbox, List<List<Position>> coordinates = const []})
       : super.withType(coordinates, GeoJSONObjectType.multiLineString,
@@ -538,7 +538,7 @@ class MultiLineString extends GeometryType<List<List<Position>>> {
 }
 
 /// Polygon, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.6
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class Polygon extends GeometryType<List<List<Position>>> {
   Polygon({BBox? bbox, List<List<Position>> coordinates = const []})
       : super.withType(coordinates, GeoJSONObjectType.polygon, bbox: bbox);
@@ -565,7 +565,7 @@ class Polygon extends GeometryType<List<List<Position>>> {
 }
 
 /// MultiPolygon, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.7
-@JsonSerializable(explicitToJson: true)
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
 class MultiPolygon extends GeometryType<List<List<List<Position>>>> {
   MultiPolygon({BBox? bbox, List<List<List<Position>>> coordinates = const []})
       : super.withType(coordinates, GeoJSONObjectType.multiPolygon, bbox: bbox);
@@ -592,7 +592,8 @@ class MultiPolygon extends GeometryType<List<List<List<Position>>>> {
 }
 
 /// GeometryCollection, as specified here https://tools.ietf.org/html/rfc7946#section-3.1.8
-@JsonSerializable(explicitToJson: true, createFactory: false)
+@JsonSerializable(
+    explicitToJson: true, createFactory: false, includeIfNull: false)
 class GeometryCollection extends GeometryObject {
   List<GeometryType> geometries;
 
diff --git a/lib/src/geojson.g.dart b/lib/src/geojson.g.dart
index 7a07462..5e1a9d4 100644
--- a/lib/src/geojson.g.dart
+++ b/lib/src/geojson.g.dart
@@ -15,10 +15,19 @@ Point _$PointFromJson(Map<String, dynamic> json) => Point(
           (json['coordinates'] as List<dynamic>).map((e) => e as num).toList()),
     );
 
-Map<String, dynamic> _$PointToJson(Point instance) => <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates.toJson(),
-    };
+Map<String, dynamic> _$PointToJson(Point instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates.toJson();
+  return val;
+}
 
 MultiPoint _$MultiPointFromJson(Map<String, dynamic> json) => MultiPoint(
       bbox: json['bbox'] == null
@@ -32,11 +41,19 @@ MultiPoint _$MultiPointFromJson(Map<String, dynamic> json) => MultiPoint(
           const [],
     );
 
-Map<String, dynamic> _$MultiPointToJson(MultiPoint instance) =>
-    <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates.map((e) => e.toJson()).toList(),
-    };
+Map<String, dynamic> _$MultiPointToJson(MultiPoint instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates.map((e) => e.toJson()).toList();
+  return val;
+}
 
 LineString _$LineStringFromJson(Map<String, dynamic> json) => LineString(
       bbox: json['bbox'] == null
@@ -50,11 +67,19 @@ LineString _$LineStringFromJson(Map<String, dynamic> json) => LineString(
           const [],
     );
 
-Map<String, dynamic> _$LineStringToJson(LineString instance) =>
-    <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates.map((e) => e.toJson()).toList(),
-    };
+Map<String, dynamic> _$LineStringToJson(LineString instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates.map((e) => e.toJson()).toList();
+  return val;
+}
 
 MultiLineString _$MultiLineStringFromJson(Map<String, dynamic> json) =>
     MultiLineString(
@@ -71,13 +96,21 @@ MultiLineString _$MultiLineStringFromJson(Map<String, dynamic> json) =>
           const [],
     );
 
-Map<String, dynamic> _$MultiLineStringToJson(MultiLineString instance) =>
-    <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates
-          .map((e) => e.map((e) => e.toJson()).toList())
-          .toList(),
-    };
+Map<String, dynamic> _$MultiLineStringToJson(MultiLineString instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates
+      .map((e) => e.map((e) => e.toJson()).toList())
+      .toList();
+  return val;
+}
 
 Polygon _$PolygonFromJson(Map<String, dynamic> json) => Polygon(
       bbox: json['bbox'] == null
@@ -93,12 +126,21 @@ Polygon _$PolygonFromJson(Map<String, dynamic> json) => Polygon(
           const [],
     );
 
-Map<String, dynamic> _$PolygonToJson(Polygon instance) => <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates
-          .map((e) => e.map((e) => e.toJson()).toList())
-          .toList(),
-    };
+Map<String, dynamic> _$PolygonToJson(Polygon instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates
+      .map((e) => e.map((e) => e.toJson()).toList())
+      .toList();
+  return val;
+}
 
 MultiPolygon _$MultiPolygonFromJson(Map<String, dynamic> json) => MultiPolygon(
       bbox: json['bbox'] == null
@@ -116,20 +158,37 @@ MultiPolygon _$MultiPolygonFromJson(Map<String, dynamic> json) => MultiPolygon(
           const [],
     );
 
-Map<String, dynamic> _$MultiPolygonToJson(MultiPolygon instance) =>
-    <String, dynamic>{
-      'bbox': instance.bbox?.toJson(),
-      'coordinates': instance.coordinates
-          .map((e) => e.map((e) => e.map((e) => e.toJson()).toList()).toList())
-          .toList(),
-    };
-
-Map<String, dynamic> _$GeometryCollectionToJson(GeometryCollection instance) =>
-    <String, dynamic>{
-      'type': _$GeoJSONObjectTypeEnumMap[instance.type]!,
-      'bbox': instance.bbox?.toJson(),
-      'geometries': instance.geometries.map((e) => e.toJson()).toList(),
-    };
+Map<String, dynamic> _$MultiPolygonToJson(MultiPolygon instance) {
+  final val = <String, dynamic>{};
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['coordinates'] = instance.coordinates
+      .map((e) => e.map((e) => e.map((e) => e.toJson()).toList()).toList())
+      .toList();
+  return val;
+}
+
+Map<String, dynamic> _$GeometryCollectionToJson(GeometryCollection instance) {
+  final val = <String, dynamic>{
+    'type': _$GeoJSONObjectTypeEnumMap[instance.type]!,
+  };
+
+  void writeNotNull(String key, dynamic value) {
+    if (value != null) {
+      val[key] = value;
+    }
+  }
+
+  writeNotNull('bbox', instance.bbox?.toJson());
+  val['geometries'] = instance.geometries.map((e) => e.toJson()).toList();
+  return val;
+}
 
 const _$GeoJSONObjectTypeEnumMap = {
   GeoJSONObjectType.point: 'Point',