diff --git a/.github/workflows/multi_version_tasks.yaml b/.github/workflows/multi_version_tasks.yaml
index 8d7f435f..c4c9ad59 100644
--- a/.github/workflows/multi_version_tasks.yaml
+++ b/.github/workflows/multi_version_tasks.yaml
@@ -28,7 +28,7 @@ jobs:
       # TODO(stuartmorgan): Add a Dart version of --skip-if-not-supporting-flutter-version
       #  and pass that for non-'main'
       matrix:
-        dart-sdk: [ 3.11.5, 3.12.0, main ]
+        dart-sdk: [ 3.12.2, 3.13.7, 3.14.0, main ]
       fail-fast: false # Continues other versions even if one fails
 
     runs-on: ubuntu-latest
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 92cc3b72..c63118a2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,7 @@ jobs:
       id: setup
       uses: ./.github/actions/set-up-repo
       with:
-        dart-sdk: 3.12.0
+        dart-sdk: 3.14.0
 
     # Give some time for checks to start becoming populated.
     # Because of latency in Github Webhooks, any checks that don't use GitHub
diff --git a/.github/workflows/windows_unit_tests.yaml b/.github/workflows/windows_unit_tests.yaml
index d29b34af..89ce69a1 100644
--- a/.github/workflows/windows_unit_tests.yaml
+++ b/.github/workflows/windows_unit_tests.yaml
@@ -33,7 +33,7 @@ jobs:
       - name: Set up environment and tooling
         uses: ./.github/actions/set-up-repo
         with:
-          dart-sdk: 3.12.0
+          dart-sdk: 3.14.0
 
       - name: Run Dart unit tests
         run: |
diff --git a/.repo_tool_config.yaml b/.repo_tool_config.yaml
index 2b704a0b..7e85e3e3 100644
--- a/.repo_tool_config.yaml
+++ b/.repo_tool_config.yaml
@@ -10,8 +10,8 @@ repo_name: flutter/core-packages
 # The major and minor version here should match the lowest version analyzed
 # in legacy version analysis.
 # TODO(stuartmorgan): Set up legacy analysis in this repo. For now this matches
-# the N-2 used in flutter/packages, but we aren't actually testing N-1 or N-2.
-min_dart: '3.10.0'
+# the N-2 used in flutter/packages.
+min_dart: '3.12.0'
 
 # The list of external packages that are allowed as dependencies.
 # All entries here must have an explanation for why they are here. See
diff --git a/packages/flutter_hook_config/CHANGELOG.md b/packages/flutter_hook_config/CHANGELOG.md
index 253adf52..3cf9f84b 100644
--- a/packages/flutter_hook_config/CHANGELOG.md
+++ b/packages/flutter_hook_config/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 0.1.0
 
 * Initial release of `flutter_hook_config`: a `package:hooks` protocol extension
diff --git a/packages/flutter_hook_config/pubspec.yaml b/packages/flutter_hook_config/pubspec.yaml
index e2fc4339..d3f05874 100644
--- a/packages/flutter_hook_config/pubspec.yaml
+++ b/packages/flutter_hook_config/pubspec.yaml
@@ -7,7 +7,7 @@ repository: https://github.com/flutter/core-packages/tree/main/packages/flutter_
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A%20flutter_hook_config%22
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   hooks: ^2.0.0
diff --git a/packages/flutter_template_images/CHANGELOG.md b/packages/flutter_template_images/CHANGELOG.md
index 3a38bb2f..cb8108f2 100644
--- a/packages/flutter_template_images/CHANGELOG.md
+++ b/packages/flutter_template_images/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 5.0.1
 
 * Updates metadata for move to https://github.com/flutter/core-packages.
diff --git a/packages/flutter_template_images/pubspec.yaml b/packages/flutter_template_images/pubspec.yaml
index 511f7e49..f688c048 100644
--- a/packages/flutter_template_images/pubspec.yaml
+++ b/packages/flutter_template_images/pubspec.yaml
@@ -5,7 +5,7 @@ issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+
 version: 5.0.1
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 topics:
   - assets
diff --git a/packages/listen/CHANGELOG.md b/packages/listen/CHANGELOG.md
index 34ac3272..1431b0c5 100644
--- a/packages/listen/CHANGELOG.md
+++ b/packages/listen/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+- Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 1.0.1
 
 - Pushes stable version.
diff --git a/packages/listen/example/pubspec.yaml b/packages/listen/example/pubspec.yaml
index d0180981..bc5c2556 100644
--- a/packages/listen/example/pubspec.yaml
+++ b/packages/listen/example/pubspec.yaml
@@ -4,7 +4,7 @@ publish_to: none
 version: 0.0.1
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   listen:
diff --git a/packages/listen/pubspec.yaml b/packages/listen/pubspec.yaml
index 3f31a12c..799defd6 100644
--- a/packages/listen/pubspec.yaml
+++ b/packages/listen/pubspec.yaml
@@ -8,7 +8,7 @@ issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+
 version: 1.0.1
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   meta: ^1.11.0
diff --git a/packages/multicast_dns/CHANGELOG.md b/packages/multicast_dns/CHANGELOG.md
index d1a8c8ed..419f6c0c 100644
--- a/packages/multicast_dns/CHANGELOG.md
+++ b/packages/multicast_dns/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 0.3.3+1
 
 * Updates metadata for move to https://github.com/flutter/core-packages.
diff --git a/packages/multicast_dns/lib/multicast_dns.dart b/packages/multicast_dns/lib/multicast_dns.dart
index 98eeff77..e986e870 100644
--- a/packages/multicast_dns/lib/multicast_dns.dart
+++ b/packages/multicast_dns/lib/multicast_dns.dart
@@ -47,8 +47,7 @@ typedef RawDatagramSocketFactory =
 /// section 5.1 of [RFC 6762](https://tools.ietf.org/html/rfc6762).
 class MDnsClient {
   /// Create a new [MDnsClient].
-  MDnsClient({RawDatagramSocketFactory rawDatagramSocketFactory = RawDatagramSocket.bind})
-    : _rawDatagramSocketFactory = rawDatagramSocketFactory;
+  MDnsClient({this._rawDatagramSocketFactory = RawDatagramSocket.bind});
 
   bool _starting = false;
   bool _started = false;
diff --git a/packages/multicast_dns/pubspec.yaml b/packages/multicast_dns/pubspec.yaml
index 9f095760..5f1575cd 100644
--- a/packages/multicast_dns/pubspec.yaml
+++ b/packages/multicast_dns/pubspec.yaml
@@ -5,7 +5,7 @@ issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+
 version: 0.3.3+1
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   meta: ^1.3.0
diff --git a/packages/standard_message_codec/CHANGELOG.md b/packages/standard_message_codec/CHANGELOG.md
index bb7ce732..fda552af 100644
--- a/packages/standard_message_codec/CHANGELOG.md
+++ b/packages/standard_message_codec/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 0.0.1+5
 
 * Updates metadata for move to https://github.com/flutter/core-packages.
diff --git a/packages/standard_message_codec/example/pubspec.yaml b/packages/standard_message_codec/example/pubspec.yaml
index bb820647..fd08f3b1 100644
--- a/packages/standard_message_codec/example/pubspec.yaml
+++ b/packages/standard_message_codec/example/pubspec.yaml
@@ -4,7 +4,7 @@ version: 0.0.1
 publish_to: none
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   standard_message_codec:
diff --git a/packages/standard_message_codec/pubspec.yaml b/packages/standard_message_codec/pubspec.yaml
index c69741da..55b3bd3f 100644
--- a/packages/standard_message_codec/pubspec.yaml
+++ b/packages/standard_message_codec/pubspec.yaml
@@ -5,7 +5,7 @@ issue_tracker:  https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen
 version: 0.0.1+5
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dev_dependencies:
   test: ^1.16.0
diff --git a/packages/vector_math/CHANGELOG.md b/packages/vector_math/CHANGELOG.md
index bff8ac07..2fe3c25d 100644
--- a/packages/vector_math/CHANGELOG.md
+++ b/packages/vector_math/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 2.4.4
 
 * Replaces dynamic multiplication in `TransformFilter.filterInplace` with `Matrix4.transform3` to fix an analyzer error on newer Dart SDKs.
diff --git a/packages/vector_math/pubspec.yaml b/packages/vector_math/pubspec.yaml
index 21624bc1..3a2ffae8 100644
--- a/packages/vector_math/pubspec.yaml
+++ b/packages/vector_math/pubspec.yaml
@@ -8,7 +8,7 @@ issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+
 version: 2.4.4
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dev_dependencies:
   benchmark_harness: ^2.0.0
diff --git a/third_party/packages/mustache_template/CHANGELOG.md b/third_party/packages/mustache_template/CHANGELOG.md
index a75daf34..98860569 100644
--- a/third_party/packages/mustache_template/CHANGELOG.md
+++ b/third_party/packages/mustache_template/CHANGELOG.md
@@ -1,3 +1,7 @@
+## NEXT
+
+* Updates minimum supported SDK version to Flutter 3.44/Dart 3.12.
+
 ## 2.0.6
 
 * Adopts `code-excerpt` for the README's Dart snippets so they're validated
diff --git a/third_party/packages/mustache_template/example/pubspec.yaml b/third_party/packages/mustache_template/example/pubspec.yaml
index 7c44f40a..a946ebde 100644
--- a/third_party/packages/mustache_template/example/pubspec.yaml
+++ b/third_party/packages/mustache_template/example/pubspec.yaml
@@ -3,7 +3,7 @@ description: Example code for the mustache_template package.
 publish_to: none
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dependencies:
   mustache_template:
diff --git a/third_party/packages/mustache_template/lib/src/parser.dart b/third_party/packages/mustache_template/lib/src/parser.dart
index e92378e6..8766b750 100644
--- a/third_party/packages/mustache_template/lib/src/parser.dart
+++ b/third_party/packages/mustache_template/lib/src/parser.dart
@@ -35,11 +35,10 @@ class TagType {
 }
 
 class Parser {
-  Parser(String source, String? templateName, String delimiters, {bool lenient = false})
+  Parser(String source, String? templateName, String delimiters, {this._lenient = false})
     : _source = source,
       _templateName = templateName,
       _delimiters = delimiters,
-      _lenient = lenient,
       _scanner = Scanner(source, templateName, delimiters);
 
   final String _source;
diff --git a/third_party/packages/mustache_template/lib/src/template.dart b/third_party/packages/mustache_template/lib/src/template.dart
index 4da713a0..0c2e94e3 100644
--- a/third_party/packages/mustache_template/lib/src/template.dart
+++ b/third_party/packages/mustache_template/lib/src/template.dart
@@ -10,15 +10,13 @@ class Template implements m.Template {
   Template.fromSource(
     this.source, {
     bool lenient = false,
-    bool htmlEscapeValues = true,
+    this._htmlEscapeValues = true,
     String? name,
-    m.PartialResolver? partialResolver,
+    this._partialResolver,
     String delimiters = '{{ }}',
   }) : _nodes = parser.parse(source, lenient, name, delimiters),
        _lenient = lenient,
-       _htmlEscapeValues = htmlEscapeValues,
-       _name = name,
-       _partialResolver = partialResolver;
+       _name = name;
 
   @override
   final String source;
diff --git a/third_party/packages/mustache_template/pubspec.yaml b/third_party/packages/mustache_template/pubspec.yaml
index f73bbfd5..c1c90d89 100644
--- a/third_party/packages/mustache_template/pubspec.yaml
+++ b/third_party/packages/mustache_template/pubspec.yaml
@@ -5,7 +5,7 @@ issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+
 version: 2.0.6
 
 environment:
-  sdk: ^3.10.0
+  sdk: ^3.12.0
 
 dev_dependencies:
   test: ^1.16.5