diff --git a/packages/smithy/goldens/lib/restXml/pubspec.yaml b/packages/smithy/goldens/lib/restXml/pubspec.yaml
index f457a8cd7b..eaa725bcf4 100644
--- a/packages/smithy/goldens/lib/restXml/pubspec.yaml
+++ b/packages/smithy/goldens/lib/restXml/pubspec.yaml
@@ -17,7 +17,7 @@ dependencies:
   fixnum: ^1.0.0
   built_collection: ^5.0.0
   meta: ^1.7.0
-  xml: 6.3.0
+  xml: 6.4.2
   shelf_router: ^1.1.0
   shelf: ^1.4.0
   aws_signature_v4:
diff --git a/packages/smithy/goldens/lib/restXmlWithNamespace/pubspec.yaml b/packages/smithy/goldens/lib/restXmlWithNamespace/pubspec.yaml
index 57c73814fd..1e75a1cd57 100644
--- a/packages/smithy/goldens/lib/restXmlWithNamespace/pubspec.yaml
+++ b/packages/smithy/goldens/lib/restXmlWithNamespace/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   aws_common:
     path: ../../../../aws_common
   built_value: ">=8.6.0 <8.7.0"
-  xml: 6.3.0
+  xml: 6.4.2
   fixnum: ^1.0.0
   meta: ^1.7.0
   built_collection: ^5.0.0
diff --git a/packages/smithy/goldens/lib2/restXml/pubspec.yaml b/packages/smithy/goldens/lib2/restXml/pubspec.yaml
index 49a1810578..98a80dfee6 100644
--- a/packages/smithy/goldens/lib2/restXml/pubspec.yaml
+++ b/packages/smithy/goldens/lib2/restXml/pubspec.yaml
@@ -17,7 +17,7 @@ dependencies:
   fixnum: ^1.0.0
   built_collection: ^5.0.0
   meta: ^1.7.0
-  xml: 6.3.0
+  xml: 6.4.2
   shelf_router: ^1.1.0
   shelf: ^1.4.0
   aws_signature_v4:
diff --git a/packages/smithy/goldens/lib2/restXmlWithNamespace/pubspec.yaml b/packages/smithy/goldens/lib2/restXmlWithNamespace/pubspec.yaml
index f00a3f0a3a..5fbddac61a 100644
--- a/packages/smithy/goldens/lib2/restXmlWithNamespace/pubspec.yaml
+++ b/packages/smithy/goldens/lib2/restXmlWithNamespace/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   aws_common:
     path: ../../../../aws_common
   built_value: ">=8.6.0 <8.7.0"
-  xml: 6.3.0
+  xml: 6.4.2
   fixnum: ^1.0.0
   meta: ^1.7.0
   built_collection: ^5.0.0
diff --git a/packages/smithy/smithy/pubspec.yaml b/packages/smithy/smithy/pubspec.yaml
index 6f352a5a76..0be5dcd56d 100644
--- a/packages/smithy/smithy/pubspec.yaml
+++ b/packages/smithy/smithy/pubspec.yaml
@@ -25,7 +25,7 @@ dependencies:
   retry: ^3.1.0
   shelf: ^1.1.0
   typed_data: ^1.3.0
-  xml: 6.3.0
+  xml: 6.4.2
 
 dev_dependencies:
   amplify_lints: ">=3.0.0 <3.1.0"
diff --git a/packages/smithy/smithy_aws/pubspec.yaml b/packages/smithy/smithy_aws/pubspec.yaml
index 641161be28..39585e5aee 100644
--- a/packages/smithy/smithy_aws/pubspec.yaml
+++ b/packages/smithy/smithy_aws/pubspec.yaml
@@ -22,7 +22,7 @@ dependencies:
   meta: ^1.7.0
   path: ^1.8.0
   smithy: ">=0.5.1 <0.6.0"
-  xml: 6.3.0
+  xml: 6.4.2
 
 dev_dependencies:
   amplify_lints: ">=3.0.0 <3.1.0"
diff --git a/packages/smithy/smithy_codegen/pubspec.yaml b/packages/smithy/smithy_codegen/pubspec.yaml
index 026040e665..e83751dcca 100644
--- a/packages/smithy/smithy_codegen/pubspec.yaml
+++ b/packages/smithy/smithy_codegen/pubspec.yaml
@@ -33,7 +33,7 @@ dependencies:
   smithy: ">=0.5.0 <0.6.0"
   smithy_aws: ">=0.5.0 <0.6.0"
   tuple: ^2.0.0
-  xml: 6.3.0
+  xml: 6.4.2
   yaml_edit: ^2.0.1
 
 dev_dependencies:
diff --git a/packages/smithy/smithy_test/pubspec.yaml b/packages/smithy/smithy_test/pubspec.yaml
index 92079f47d4..e255f1f0f6 100644
--- a/packages/smithy/smithy_test/pubspec.yaml
+++ b/packages/smithy/smithy_test/pubspec.yaml
@@ -18,7 +18,7 @@ dependencies:
   smithy: any
   test: ^1.22.1
   tuple: ^2.0.0
-  xml: 6.3.0
+  xml: 6.4.2
 
 dev_dependencies:
   amplify_lints:
diff --git a/pubspec.yaml b/pubspec.yaml
index e519ff076c..2dea0fc2af 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -43,7 +43,7 @@ dependencies:
   stack_trace: ^1.10.0
   uuid: ">=3.0.6 <=3.0.7"
   win32: ">=4.1.2 <6.0.0"
-  xml: 6.3.0
+  xml: 6.4.2
   test: ^1.22.1
 
 aft: