diff --git a/pubspec.yaml b/pubspec.yaml
index 91275d5..5948a48 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,14 +9,14 @@ environment:
 # Add regular dependencies here.
 dependencies:
   crypto: ^3.0.3
-  dio: ^5.5.0+1
+  dio: ^5.8.0+1
   encrypt: ^5.0.3
-  intl: ^0.20.1
+  intl: ^0.20.2
 # path: ^1.8.0
 
 dev_dependencies:
-  lints: ^3.0.0
-  test: ^1.24.0
+  lints: ^5.1.1
+  test: ^1.25.15
 
   # following page: https://dart.dev/tools/pub/pubspec
 
diff --git a/test/encryption_test.dart b/test/encryption_test.dart
index 6e3a044..b8cfc1b 100644
--- a/test/encryption_test.dart
+++ b/test/encryption_test.dart
@@ -2,8 +2,6 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:libac_dart/encryption/aes.dart';
-import 'package:libac_dart/encryption/xtea.dart';
-import 'package:libac_dart/utils/Hashing.dart';
 import 'package:test/expect.dart';
 import 'package:test/scaffolding.dart';
 
diff --git a/test/io_test.dart b/test/io_test.dart
index 464de24..6924180 100644
--- a/test/io_test.dart
+++ b/test/io_test.dart
@@ -11,7 +11,7 @@ Future<void> main() async {
   });
 
   test("Test directory size checking", () async {
-    expect(await getDirectorySize("test"), 121634);
+    expect(await getDirectorySize("test"), 121680);
   });
 
   test("Test file info methods", () async {
diff --git a/test/nbt_test.dart b/test/nbt_test.dart
index 1612f38..bbd18d7 100644
--- a/test/nbt_test.dart
+++ b/test/nbt_test.dart
@@ -17,7 +17,8 @@ void main() {
   test('read non-compressed helloworld NBT', () async {
     print("READING : ${Directory.current.path}/test/hello_world.nbt");
     CompoundTag tag =
-        await NbtIo.read("${Directory.current.path}/test/hello_world.nbt");
+        await NbtIo.read("${Directory.current.path}/test/hello_world.nbt")
+            as CompoundTag;
     expect(tag.getKey(), "hello world");
     expect(tag.containsKey("name"), true);
 
@@ -37,7 +38,8 @@ void main() {
   test('read non-compressed self-made helloworld NBT', () async {
     print("READING : ${Directory.current.path}/build/hello_world.nbt");
     CompoundTag tag =
-        await NbtIo.read("${Directory.current.path}/build/hello_world.nbt");
+        await NbtIo.read("${Directory.current.path}/build/hello_world.nbt")
+            as CompoundTag;
     expect(tag.getKey(), "hello world");
     expect(tag.containsKey("name"), true);
 
@@ -46,7 +48,7 @@ void main() {
 
   test('read compressed bigtest.nbt', () async {
     var path = "${Directory.current.path}/test/bigtest.nbt";
-    CompoundTag tag = await NbtIo.read(path);
+    CompoundTag tag = await NbtIo.read(path) as CompoundTag;
     expect(tag.getKey(), "Level");
     expect(tag.get("shortTest")!.asShort(), 32767);
     expect(tag.get("doubleTest")!.asDouble(), 0.4931287132182315);
@@ -64,7 +66,8 @@ void main() {
 
   test("Read HelloWorld, Output to SNBT", () async {
     CompoundTag ct =
-        await NbtIo.read("${Directory.current.path}/test/hello_world.nbt");
+        await NbtIo.read("${Directory.current.path}/test/hello_world.nbt")
+            as CompoundTag;
     StringBuilder sb = StringBuilder();
     Tag.writeStringifiedNamedTag(ct, sb, 0);
     print(sb.toString());
@@ -72,7 +75,8 @@ void main() {
 
   test("Read BigTest, Output to SNBT", () async {
     CompoundTag ct =
-        await NbtIo.read("${Directory.current.path}/test/bigtest.nbt");
+        await NbtIo.read("${Directory.current.path}/test/bigtest.nbt")
+            as CompoundTag;
     StringBuilder sb = StringBuilder();
     Tag.writeStringifiedNamedTag(ct, sb, 0);
     print(sb.toString());
@@ -80,7 +84,8 @@ void main() {
 
   test("Write BigTest to SNBT file", () async {
     CompoundTag ct =
-        await NbtIo.read("${Directory.current.path}/test/bigtest.nbt");
+        await NbtIo.read("${Directory.current.path}/test/bigtest.nbt")
+            as CompoundTag;
     String output = "${Directory.current.path}/build/bigtest.snbt";
     File file = File(output);
     SnbtIo.writeToFile(output, ct);
@@ -114,7 +119,7 @@ void main() {
     String OutputSNBT = "${Directory.current.path}/build/el-test.snbt";
     String OutputNBT = "${Directory.current.path}/build/el-test.nbt";
 
-    CompoundTag tag = await NbtIo.read(OriginFile);
+    CompoundTag tag = await NbtIo.read(OriginFile) as CompoundTag;
     await SnbtIo.writeToFile(OutputSNBT, tag);
 
     expect(File(OutputSNBT).existsSync(), true);
@@ -125,7 +130,8 @@ void main() {
   }, timeout: Timeout(Duration(hours: 90)));
 
   test("Read Sophisticated Backpack data", () async {
-    CompoundTag ct = await NbtIo.read("test/sophisticatedbackpacks.dat");
+    CompoundTag ct =
+        await NbtIo.read("test/sophisticatedbackpacks.dat") as CompoundTag;
     // Convert to SNBT
     String snbtData = SnbtIo.writeToString(ct);
     // Convert snbt back to NBT