diff --git a/example/pubspec.yaml b/example/pubspec.yaml
index a2deae7..51f7b2f 100644
--- a/example/pubspec.yaml
+++ b/example/pubspec.yaml
@@ -6,7 +6,7 @@ publish_to: 'none'
 version: 1.0.0
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: ">=2.14.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.6"
 
 dependencies:
diff --git a/lib/src/dto/sku_details/sku_details.dart b/lib/src/dto/sku_details/sku_details.dart
index c3ec628..08edf1c 100644
--- a/lib/src/dto/sku_details/sku_details.dart
+++ b/lib/src/dto/sku_details/sku_details.dart
@@ -108,7 +108,7 @@ class SkuDetailsWrapper {
   Map<String, dynamic> toJson() => _$SkuDetailsWrapperToJson(this);
 
   @override
-  bool operator ==(dynamic other) {
+  bool operator ==(Object other) {
     if (other.runtimeType != runtimeType) {
       return false;
     }
diff --git a/pubspec.yaml b/pubspec.yaml
index 0090759..fedf767 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: 'https://qonversion.io'
 repository: 'https://github.com/qonversion/flutter-sdk'
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.14.0 <3.0.0'
   flutter: ">=1.10.0"
 
 dependencies: