diff --git a/.github/workflows/run_tests.yaml b/.github/workflows/run_tests.yaml
index d172f37..30a373b 100644
--- a/.github/workflows/run_tests.yaml
+++ b/.github/workflows/run_tests.yaml
@@ -7,7 +7,7 @@ jobs:
   build:
     strategy:
       matrix:
-        dart_version: [ 2.14,2.15,2.16,2.17,2.18,2.19,3.0,3.1,3.2 ]
+        dart_version: [ 2.18,2.19,3.0,3.1,3.2,3.3 ]
     runs-on: ubuntu-latest
     container:
       image: dart:${{ matrix.dart_version }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6a2bf2e..0b2e2c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 1.2.0
+
+- stop supporting dart versions prior to 2.17.0
+- switch to using flutter_lint away from lints
+- optimize memory usage when declaring binary structure
+
 ## 1.1.2
 
 - fix issue related to missing gh permission
diff --git a/analysis_options.yaml b/analysis_options.yaml
index dee8927..773ccf5 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -1,30 +1,28 @@
-# This file configures the static analysis results for your project (errors,
-# warnings, and lints).
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
 #
-# This enables the 'recommended' set of lints from `package:lints`.
-# This set helps identify many issues that may lead to problems when running
-# or consuming Dart code, and enforces writing Dart using a single, idiomatic
-# style and format.
-#
-# If you want a smaller set of lints you can change this to specify
-# 'package:lints/core.yaml'. These are just the most critical lints
-# (the recommended set includes the core lints).
-# The core lints are also what is used by pub.dev for scoring packages.
-
-include: package:lints/recommended.yaml
-
-# Uncomment the following section to specify additional rules.
-
-# linter:
-#   rules:
-#     - camel_case_types
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
 
-# analyzer:
-#   exclude:
-#     - path/to/excluded/files/**
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
 
-# For more information about the core and recommended set of lints, see
-# https://dart.dev/go/core-lints
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at https://dart.dev/tools/linter-rules.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+  # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+  # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
 
-# For additional information about configuring this file, see
-# https://dart.dev/guides/language/analysis-options
+# Additional information about this file can be found at
+# https://dart.dev/tools/analysis
\ No newline at end of file
diff --git a/example/xid_example.dart b/example/xid_example.dart
index 3b53f8c..b1a6be0 100644
--- a/example/xid_example.dart
+++ b/example/xid_example.dart
@@ -1,6 +1,8 @@
+import 'dart:developer';
+
 import 'package:xid/xid.dart';
 
 void main() {
   var xid = Xid();
-  print('generated id: $xid');
+  log('generated id: $xid');
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 8b33d16..844fd32 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -3,12 +3,12 @@ description: |
   Xid is a globally unique id generator. Xids are small, fast to generate, sortable, 
   compact URL-safe string with no configuration or central generator server.
   
-version: 1.1.2
+version: 1.2.0
 repository: https://github.com/pitabwire/xid
 environment:
-  sdk: ^2.14.4
+  sdk: ^2.18.0
 
 dev_dependencies:
-  lints: ^1.0.0
+  flutter_lints: ^2.0.2
   test: ^1.16.0
 
diff --git a/test/xid_test.dart b/test/xid_test.dart
index 1467571..5997c8b 100644
--- a/test/xid_test.dart
+++ b/test/xid_test.dart
@@ -20,7 +20,7 @@ void main() {
       0x2d,
       0xc9
     ];
-    final idString = "9m4e2mr0ui3e8a215n4g";
+    const idString = "9m4e2mr0ui3e8a215n4g";
     test('Encoding works well', () {
       expect(base32encode(idBytes), idString.toUpperCase());
       expect(Xid.fromString(idString).toBytes(), idBytes);
@@ -42,7 +42,7 @@ void main() {
       0x2d,
       0xc9
     ];
-    final decodeIdString = "9m4e2mr0ui3e8a215n4g";
+    const decodeIdString = "9m4e2mr0ui3e8a215n4g";
 
     test('Decoding works well', () {
       expect(base32decode(decodeIdString), decodeIdBytes);