diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a6402cde72..ae58ba1294 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        sdk: [dev, stable]
+        sdk: [dev, beta]
         job: [main, flutter, sdk-analyzer, packages, sdk-docs]
         include:
           - os: macos-latest
@@ -32,9 +32,9 @@ jobs:
             # Do not try to run flutter against the "stable" sdk,
             # it is unlikely to work and produces uninteresting
             # results.
-          - sdk: stable
+          - sdk: beta
             job: flutter
-          - sdk: stable
+          - sdk: beta
             job: sdk-analyzer
 
     steps:
diff --git a/lib/src/generator/templates.renderers.dart b/lib/src/generator/templates.renderers.dart
index 3b1437c9f2..1ba623cc04 100644
--- a/lib/src/generator/templates.renderers.dart
+++ b/lib/src/generator/templates.renderers.dart
@@ -1167,6 +1167,16 @@ class _Renderer_Object extends RendererBase<Object> {
             return renderSimple(c.hashCode, ast, r.template, parent: r);
           },
         ),
+        'runtimeType': Property(
+          getValue: (CT_ c) => c.runtimeType,
+          renderVariable:
+              (CT_ c, Property<CT_> self, List<String> remainingNames) =>
+                  self.renderSimpleVariable(c, remainingNames, 'Type'),
+          isNullValue: (CT_ c) => c.runtimeType == null,
+          renderValue: (CT_ c, RendererBase<CT_> r, List<MustachioNode> ast) {
+            return renderSimple(c.runtimeType, ast, r.template, parent: r);
+          },
+        ),
       };
 
   _Renderer_Object(
diff --git a/pubspec.yaml b/pubspec.yaml
index cd670b0d6e..015e2caf33 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,37 +4,37 @@ version: 0.39.0
 description: A non-interactive HTML documentation generator for Dart source code.
 homepage: https://github.com/dart-lang/dartdoc
 environment:
-  sdk: '>=2.10.0 <3.0.0'
+  sdk: '>=2.11.99 <3.0.0'
 
 dependencies:
-  analyzer: ^0.41.1
-  args: '>=1.5.0 <2.0.0'
-  charcode: ^1.1.2
+  analyzer: ^1.0.0
+  args: ^2.0.0
+  charcode: ^1.2.0
   collection: ^1.2.0
-  cli_util: '>=0.1.4 <0.3.0'
-  crypto: ^2.0.6
-  glob: '>=1.1.2 <2.0.0'
-  html: '>=0.12.1 <0.15.0'
-  logging: ^0.11.3+1
-  markdown: '>=2.1.5 <4.0.0'
+  cli_util: ^0.3.0
+  crypto: ^3.0.0
+  glob: ^2.0.0
+  html: ^0.15.0
+  logging: ^1.0.0
+  markdown: ^4.0.0
   meta: ^1.2.4
   mustache: ^1.1.0
-  package_config: '>=0.1.5 <2.0.0'
+  package_config: ^2.0.0
   path: ^1.3.0
-  pub_semver: ^1.3.7
+  pub_semver: ^2.0.0
   source_span: ^1.5.2
-  yaml: ^2.1.0
+  yaml: ^3.0.0
 
 dev_dependencies:
-  async: '>=2.0.8'
+  async: ^2.0.8
   build: ^1.5.0
   build_runner: ^1.10.0
   build_test: ^1.3.0
   build_version: ^2.0.1
-  coverage: ^0.14.0
+  coverage: ^0.15.2
   dart_style: ^1.3.9
-  grinder: ^0.8.2
-  http: ^0.12.0
+  grinder: ^0.9.0-nullsafety.0
+  http: ^0.13.0
   pedantic: ^1.9.0
   test: ^1.3.0
 
diff --git a/test/mustachio/foo.renderers.dart b/test/mustachio/foo.renderers.dart
index d16fa81b52..611cc66f2a 100644
--- a/test/mustachio/foo.renderers.dart
+++ b/test/mustachio/foo.renderers.dart
@@ -108,6 +108,16 @@ class Renderer_Object extends RendererBase<Object> {
             return renderSimple(c.hashCode, ast, r.template, parent: r);
           },
         ),
+        'runtimeType': Property(
+          getValue: (CT_ c) => c.runtimeType,
+          renderVariable:
+              (CT_ c, Property<CT_> self, List<String> remainingNames) =>
+                  self.renderSimpleVariable(c, remainingNames, 'Type'),
+          isNullValue: (CT_ c) => c.runtimeType == null,
+          renderValue: (CT_ c, RendererBase<CT_> r, List<MustachioNode> ast) {
+            return renderSimple(c.runtimeType, ast, r.template, parent: r);
+          },
+        ),
       };
 
   Renderer_Object(
diff --git a/test/mustachio/renderer_test.dart b/test/mustachio/renderer_test.dart
index c7e8d71361..464682b29a 100644
--- a/test/mustachio/renderer_test.dart
+++ b/test/mustachio/renderer_test.dart
@@ -21,12 +21,13 @@ void main() {
 
   test('property map contains all public getters', () {
     var propertyMap = Renderer_Foo.propertyMap();
-    expect(propertyMap.keys, hasLength(5));
+    expect(propertyMap.keys, hasLength(6));
     expect(propertyMap['b1'], isNotNull);
     expect(propertyMap['s1'], isNotNull);
     expect(propertyMap['l1'], isNotNull);
     expect(propertyMap['baz'], isNotNull);
     expect(propertyMap['hashCode'], isNotNull);
+    expect(propertyMap['runtimeType'], isNotNull);
   });
 
   test('property map contains valid bool Properties', () {
diff --git a/tool/doc_packages.dart b/tool/doc_packages.dart
index 5112d87578..bdcfc9b457 100644
--- a/tool/doc_packages.dart
+++ b/tool/doc_packages.dart
@@ -123,7 +123,7 @@ Future<void> _printGenerationResult(
 
 Future<List<String>> _packageUrls(int page) {
   return http
-      .get('https://pub.dartlang.org/packages.json?page=${page}')
+      .get(Uri.parse('https://pub.dartlang.org/packages.json?page=${page}'))
       .then((response) {
     return List<String>.from(json.decode(response.body)['packages']);
   });
@@ -131,7 +131,7 @@ Future<List<String>> _packageUrls(int page) {
 
 Future<List<PackageInfo>> _getPackageInfos(List<String> packageUrls) {
   var futures = packageUrls.map((String p) {
-    return http.get(p).then((response) {
+    return http.get(Uri.parse(p)).then((response) {
       var decodedJson = json.decode(response.body);
       String name = decodedJson['name'];
       var versions = List<Version>.from(
@@ -151,7 +151,7 @@ Future<bool> _generateFor(PackageInfo package) async {
   _logBuffer = StringBuffer();
 
   // Get the package archive (tar zxvf foo.tar.gz).
-  var response = await http.get(package.archiveUrl);
+  var response = await http.get(Uri.parse(package.archiveUrl));
   if (response.statusCode != 200) throw response;
 
   var output = Directory('${_rootDir}/${package.name}');