diff --git a/packages/body_parser/README.md b/packages/body_parser/README.md
index 8eb0211..c5c71e4 100644
--- a/packages/body_parser/README.md
+++ b/packages/body_parser/README.md
@@ -30,7 +30,7 @@ A benefit of this is that primitive types are automatically deserialized correct
 To install Body Parser for your Dart project, simply add body_parser to your pub dependencies.
 
   dependencies:
-      belatuk_body_parser: ^4.0.0
+      belatuk_body_parser: ^5.0.0
 
 ### Usage
 
diff --git a/packages/body_parser/pubspec.yaml b/packages/body_parser/pubspec.yaml
index 6008acd..4667195 100644
--- a/packages/body_parser/pubspec.yaml
+++ b/packages/body_parser/pubspec.yaml
@@ -10,5 +10,5 @@ dependencies:
   mime: ^1.0.0
 dev_dependencies:
   http: ^0.13.0
-  test: ^1.17.8
+  test: ^1.24.0
   lints: ^2.0.0
\ No newline at end of file
diff --git a/packages/code_buffer/README.md b/packages/code_buffer/README.md
index e305835..13747b7 100644
--- a/packages/code_buffer/README.md
+++ b/packages/code_buffer/README.md
@@ -14,7 +14,7 @@ In your `pubspec.yaml`:
 
 ```yaml
 dependencies:
-  belatuk_code_buffer: ^4.0.0
+  belatuk_code_buffer: ^5.0.0
 ```
 
 ## Usage
diff --git a/packages/code_buffer/pubspec.yaml b/packages/code_buffer/pubspec.yaml
index 23f8e93..f309685 100644
--- a/packages/code_buffer/pubspec.yaml
+++ b/packages/code_buffer/pubspec.yaml
@@ -8,5 +8,5 @@ dependencies:
   charcode: ^1.2.0
   source_span: ^1.8.1
 dev_dependencies:
-  test: ^1.17.3
+  test: ^1.24.0
   lints: ^2.0.0
diff --git a/packages/combinator/pubspec.yaml b/packages/combinator/pubspec.yaml
index ba30c0b..5e66cfb 100644
--- a/packages/combinator/pubspec.yaml
+++ b/packages/combinator/pubspec.yaml
@@ -11,5 +11,5 @@ dependencies:
   string_scanner: ^1.1.0
   tuple: ^2.0.0
 dev_dependencies:
-  test: ^1.17.4
+  test: ^1.24.0
   lints: ^2.0.0
diff --git a/packages/html_builder/CHANGELOG.md b/packages/html_builder/CHANGELOG.md
index e2c2d5f..3e26cab 100644
--- a/packages/html_builder/CHANGELOG.md
+++ b/packages/html_builder/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## 5.0.0-beta.1
+
+* Require Dart >= 3.0
+
 ## 4.0.0
 
 * Require Dart >= 2.17
diff --git a/packages/html_builder/README.md b/packages/html_builder/README.md
index b59ff25..243791c 100644
--- a/packages/html_builder/README.md
+++ b/packages/html_builder/README.md
@@ -18,7 +18,7 @@ In your `pubspec.yaml`:
 
 ```yaml
 dependencies:
-  belatuk_html_builder: ^4.0.0
+  belatuk_html_builder: ^5.0.0
 ```
 
 ## Usage
diff --git a/packages/html_builder/lib/src/mutations.dart b/packages/html_builder/lib/src/mutations.dart
index 3173163..f3cdc7e 100644
--- a/packages/html_builder/lib/src/mutations.dart
+++ b/packages/html_builder/lib/src/mutations.dart
@@ -12,9 +12,9 @@ Node Function(Node) rebuild(NodeBuilder Function(NodeBuilder) transform,
 ///
 /// Use this alongside [rebuild].
 Node Function(Node) rebuildRecursive(Node Function(Node) f) {
-  Node _build(Node node) {
-    return NodeBuilder.from(f(node)).mapChildren(_build).build();
+  Node build(Node node) {
+    return NodeBuilder.from(f(node)).mapChildren(build).build();
   }
 
-  return _build;
+  return build;
 }
diff --git a/packages/html_builder/pubspec.yaml b/packages/html_builder/pubspec.yaml
index 26b993a..52e1fe2 100644
--- a/packages/html_builder/pubspec.yaml
+++ b/packages/html_builder/pubspec.yaml
@@ -1,12 +1,12 @@
 name: belatuk_html_builder
-version: 4.0.0
+version: 5.0.0-beta.1
 description: Build HTML AST's and render them to HTML. This can be used as an internal DSL, i.e. for a templating engine.
 homepage: https://github.com/dart-backend/belatuk-common-utilities/tree/main/packages/html_builder
 environment:
-  sdk: '>=2.17.0 <3.0.0'
+  sdk: '>=3.0.0-290.3.beta <4.0.0'
 dependencies:
   collection: ^1.15.0
 dev_dependencies:
   html: ^0.15.0
-  test: ^1.17.4
+  test: ^1.24.0
   lints: ^2.0.0
diff --git a/packages/html_builder/test/render_test.dart b/packages/html_builder/test/render_test.dart
index 17a2867..e078b4f 100644
--- a/packages/html_builder/test/render_test.dart
+++ b/packages/html_builder/test/render_test.dart
@@ -1,6 +1,5 @@
 import 'package:html/parser.dart' as html5;
 import 'package:belatuk_html_builder/elements.dart';
-import 'package:belatuk_html_builder/belatuk_html_builder.dart';
 import 'package:test/test.dart';
 
 void main() {