diff --git a/pkg/analyzer/analysis_options.yaml b/pkg/analyzer/analysis_options.yaml
index 89a3db64244c..24ce13d4b8f7 100644
--- a/pkg/analyzer/analysis_options.yaml
+++ b/pkg/analyzer/analysis_options.yaml
@@ -18,5 +18,6 @@ linter:
   rules:
     - avoid_unused_constructor_parameters
     - empty_statements
+    - prefer_typing_uninitialized_variables
     - unnecessary_brace_in_string_interps
     - unnecessary_parenthesis
diff --git a/pkg/analyzer/lib/src/dart/analysis/driver.dart b/pkg/analyzer/lib/src/dart/analysis/driver.dart
index d52a6e1fd571..f2844c6755f6 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver.dart
@@ -2278,7 +2278,7 @@ class _DiscoverAvailableFilesTask {
 
 /// Information about an exception and its context.
 class _ExceptionState {
-  final exception;
+  final Object exception;
   final StackTrace stackTrace;
 
   /// The key under which the context of the exception was stored, or `null`
diff --git a/pkg/analyzer/lib/src/error/best_practices_verifier.dart b/pkg/analyzer/lib/src/error/best_practices_verifier.dart
index 60696721c6e6..38391220eacb 100644
--- a/pkg/analyzer/lib/src/error/best_practices_verifier.dart
+++ b/pkg/analyzer/lib/src/error/best_practices_verifier.dart
@@ -1526,9 +1526,9 @@ class _InvalidAccessVerifier {
     }
     AstNode grandparent = parent?.parent;
 
-    var element;
-    var name;
-    var node;
+    Element element;
+    String name;
+    AstNode node;
 
     if (grandparent is ConstructorName) {
       element = grandparent.staticElement;