diff --git a/packages/cli/pubspec.yaml b/packages/cli/pubspec.yaml
index 9b7f16a37..aa6b4f985 100644
--- a/packages/cli/pubspec.yaml
+++ b/packages/cli/pubspec.yaml
@@ -5,7 +5,7 @@ description: A modern HTTP server application framework, ORM and OAuth2 provider
 environment:
   sdk: ">=3.2.0 <4.0.0"
 dependencies:
-  analyzer: ^5.1.0
+  analyzer: ^6.3.0
   args: ^2.1.1
   collection: ^1.15.0
   conduit_common: ^4.3.7
diff --git a/packages/core/pubspec.yaml b/packages/core/pubspec.yaml
index a44dea748..05688d36b 100644
--- a/packages/core/pubspec.yaml
+++ b/packages/core/pubspec.yaml
@@ -5,7 +5,7 @@ description: This is the core of the framework.
 environment:
   sdk: ">=3.2.0 <4.0.0"
 dependencies:
-  analyzer: ^5.1.0
+  analyzer: ^6.3.0
   args: ^2.1.1
   collection: ^1.15.0
   conduit_common: ^4.3.7
diff --git a/packages/isolate_exec/pubspec.yaml b/packages/isolate_exec/pubspec.yaml
index 0475ec5f2..e113359a3 100644
--- a/packages/isolate_exec/pubspec.yaml
+++ b/packages/isolate_exec/pubspec.yaml
@@ -5,7 +5,7 @@ description: This library contains types that allow for executing code in a spaw
 environment:
   sdk: ">=3.2.0 <4.0.0"
 dependencies:
-  analyzer: ^5.1.0
+  analyzer: ^6.3.0
   glob: ^2.0.0
   path: ^1.8.0
 dev_dependencies:
diff --git a/packages/runtime/lib/src/analyzer.dart b/packages/runtime/lib/src/analyzer.dart
index 29c88a0b9..40f7b7ef2 100644
--- a/packages/runtime/lib/src/analyzer.dart
+++ b/packages/runtime/lib/src/analyzer.dart
@@ -103,7 +103,7 @@ class CodeAnalyzer {
         .declarations
         .whereType<ClassDeclaration>()
         .where((c) =>
-            c.extendsClause?.superclass.name2.stringValue == superclassName)
+            c.extendsClause?.superclass.name2.toString() == superclassName)
         .toList();
   }
 
diff --git a/packages/runtime/pubspec.yaml b/packages/runtime/pubspec.yaml
index 16fd85ae4..0529c321b 100644
--- a/packages/runtime/pubspec.yaml
+++ b/packages/runtime/pubspec.yaml
@@ -5,7 +5,7 @@ repository: https://github.com/conduit-dart/conduit-runtime
 environment:
   sdk: '>=3.2.0 <4.0.0'
 dependencies:
-  analyzer: ^5.1.0
+  analyzer: ^6.3.0
   args: ^2.0.0
   conduit_isolate_exec: ^4.3.7
   io: ^1.0.3
diff --git a/packages/runtime/test/project_analyzer_test.dart b/packages/runtime/test/project_analyzer_test.dart
index 7c5b8b3ac..87364ee93 100644
--- a/packages/runtime/test/project_analyzer_test.dart
+++ b/packages/runtime/test/project_analyzer_test.dart
@@ -23,6 +23,6 @@ void main() {
     );
     expect(klass, isNotNull);
     expect(klass!.name.value(), "ConsumerSubclass");
-    expect(klass.extendsClause!.superclass.name2.stringValue, "Consumer");
+    expect(klass.extendsClause!.superclass.name2.toString(), "Consumer");
   });
 }
diff --git a/packages/test_harness/lib/src/agent.dart b/packages/test_harness/lib/src/agent.dart
index 4e23f7aee..dc7fdf44b 100644
--- a/packages/test_harness/lib/src/agent.dart
+++ b/packages/test_harness/lib/src/agent.dart
@@ -93,10 +93,10 @@ class Agent {
   /// The base URL that this agent's requests will be made against.
   String get baseURL {
     if (_application != null) {
-      if (!_application!.isRunning) {
+      if (!_application.isRunning) {
         throw StateError("Application under test is not running.");
       }
-      return "${_application!.server.requiresHTTPS ? "https" : "http"}://localhost:${_application!.channel.server.server!.port}";
+      return "${_application.server.requiresHTTPS ? "https" : "http"}://localhost:${_application.channel.server.server!.port}";
     }
 
     return "$_scheme://$_host:$_port";
diff --git a/packages/test_harness/pubspec.yaml b/packages/test_harness/pubspec.yaml
index cba7083fe..bdf1539a2 100644
--- a/packages/test_harness/pubspec.yaml
+++ b/packages/test_harness/pubspec.yaml
@@ -12,4 +12,4 @@ dev_dependencies:
   conduit_postgresql:
     path: ../postgresql
   lints: ^3.0.0
-  test_core: ^0.4.18
+  test_core: ^0.5.9