diff --git a/add_to_app/flutter_module_using_plugin/pubspec.lock b/add_to_app/flutter_module_using_plugin/pubspec.lock
index 7b366670b..fe7d32c37 100644
--- a/add_to_app/flutter_module_using_plugin/pubspec.lock
+++ b/add_to_app/flutter_module_using_plugin/pubspec.lock
@@ -209,7 +209,7 @@ packages:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   url_launcher_web:
     dependency: transitive
     description:
diff --git a/experimental/desktop_photo_search/pubspec.lock b/experimental/desktop_photo_search/pubspec.lock
index 6adc7be4b..8dab888f0 100644
--- a/experimental/desktop_photo_search/pubspec.lock
+++ b/experimental/desktop_photo_search/pubspec.lock
@@ -1,27 +1,27 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  analysis_server_lib:
+  _fe_analyzer_shared:
     dependency: transitive
     description:
-      name: analysis_server_lib
+      name: _fe_analyzer_shared
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.8"
-  analyzer:
+    version: "1.0.3"
+  analysis_server_lib:
     dependency: transitive
     description:
-      name: analyzer
+      name: analysis_server_lib
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.38.5"
-  analyzer_plugin:
+    version: "0.1.9"
+  analyzer:
     dependency: transitive
     description:
-      name: analyzer_plugin
+      name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.1"
+    version: "0.39.4"
   archive:
     dependency: transitive
     description:
@@ -70,49 +70,49 @@ packages:
       name: build_daemon
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.3"
   build_resolvers:
     dependency: transitive
     description:
       name: build_resolvers
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.1"
+    version: "1.3.1"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.2"
+    version: "1.7.3"
   build_runner_core:
     dependency: transitive
     description:
       name: build_runner_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.2.0"
+    version: "4.3.0"
   built_collection:
     dependency: "direct main"
     description:
       name: built_collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.3.0"
+    version: "4.3.2"
   built_value:
     dependency: "direct main"
     description:
       name: built_value
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.0"
+    version: "7.0.4"
   built_value_generator:
     dependency: "direct dev"
     description:
       name: built_value_generator
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.0.0"
+    version: "7.0.4"
   charcode:
     dependency: transitive
     description:
@@ -195,7 +195,7 @@ packages:
     description:
       path: "plugins/file_chooser"
       ref: HEAD
-      resolved-ref: ab3b14f7231289dc66b7ad21c607cb90dd896fc0
+      resolved-ref: aeff699d71972f20151757cc93ec3cac1daaa2f1
       url: "https://github.com/google/flutter-desktop-embedding.git"
     source: git
     version: "0.1.0"
@@ -221,13 +221,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  front_end:
-    dependency: transitive
-    description:
-      name: front_end
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.1.27"
   glob:
     dependency: transitive
     description:
@@ -262,7 +255,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_multi_server:
     dependency: transitive
     description:
@@ -311,14 +304,7 @@ packages:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0"
-  kernel:
-    dependency: transitive
-    description:
-      name: kernel
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.3.27"
+    version: "3.0.1"
   logging:
     dependency: "direct main"
     description:
@@ -338,7 +324,7 @@ packages:
     description:
       path: "plugins/menubar"
       ref: HEAD
-      resolved-ref: ab3b14f7231289dc66b7ad21c607cb90dd896fc0
+      resolved-ref: aeff699d71972f20151757cc93ec3cac1daaa2f1
       url: "https://github.com/google/flutter-desktop-embedding.git"
     source: git
     version: "0.0.1"
@@ -419,6 +405,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.4.0"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   pool:
     dependency: transitive
     description:
@@ -493,7 +486,7 @@ packages:
       name: source_gen
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.4+6"
+    version: "0.9.4+7"
   source_map_stack_trace:
     dependency: transitive
     description:
@@ -535,7 +528,7 @@ packages:
       name: stream_transform
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.20"
+    version: "1.1.0"
   string_scanner:
     dependency: transitive
     description:
@@ -605,28 +598,28 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.4.0"
+    version: "5.4.1"
   url_launcher_macos:
     dependency: transitive
     description:
       name: url_launcher_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1"
+    version: "0.0.1+2"
   url_launcher_platform_interface:
     dependency: transitive
     description:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.5"
   url_launcher_web:
     dependency: transitive
     description:
       name: url_launcher_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.0+1"
+    version: "0.1.0+2"
   uuid:
     dependency: "direct main"
     description:
@@ -647,7 +640,7 @@ packages:
       name: vm_service
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "2.3.1"
   watcher:
     dependency: transitive
     description:
diff --git a/flutter_maps_firestore/pubspec.lock b/flutter_maps_firestore/pubspec.lock
index 55e9f4798..2283034fa 100644
--- a/flutter_maps_firestore/pubspec.lock
+++ b/flutter_maps_firestore/pubspec.lock
@@ -70,14 +70,14 @@ packages:
       name: firebase
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "7.1.0"
+    version: "7.2.0"
   firebase_core:
     dependency: transitive
     description:
       name: firebase_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.3+1"
+    version: "0.4.3+2"
   firebase_core_platform_interface:
     dependency: transitive
     description:
@@ -91,7 +91,7 @@ packages:
       name: firebase_core_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.1+1"
+    version: "0.1.1+2"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -127,7 +127,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_parser:
     dependency: transitive
     description:
@@ -267,5 +267,5 @@ packages:
     source: hosted
     version: "3.5.0"
 sdks:
-  dart: ">=2.5.0 <3.0.0"
+  dart: ">=2.7.0-dev <3.0.0"
   flutter: ">=1.12.13+hotfix.4 <2.0.0"
diff --git a/gallery/gallery/pubspec.lock b/gallery/gallery/pubspec.lock
index ca5143c70..a25ae7398 100644
--- a/gallery/gallery/pubspec.lock
+++ b/gallery/gallery/pubspec.lock
@@ -1,13 +1,20 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.38.5"
+    version: "0.39.4"
   archive:
     dependency: transitive
     description:
@@ -149,13 +156,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  front_end:
-    dependency: transitive
-    description:
-      name: front_end
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.1.27"
   glob:
     dependency: transitive
     description:
@@ -197,7 +197,7 @@ packages:
       name: intl_translation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.17.7"
+    version: "0.17.9"
   js:
     dependency: transitive
     description:
@@ -205,13 +205,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.6.1+1"
-  kernel:
-    dependency: transitive
-    description:
-      name: kernel
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.3.27"
   matcher:
     dependency: transitive
     description:
@@ -412,7 +405,7 @@ packages:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "1.0.5"
   url_launcher_web:
     dependency: transitive
     description:
@@ -449,5 +442,5 @@ packages:
     source: hosted
     version: "2.2.0"
 sdks:
-  dart: ">=2.5.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"
   flutter: ">=1.12.13+hotfix.4 <2.0.0"
diff --git a/jsonexample/pubspec.lock b/jsonexample/pubspec.lock
index effca0e23..a06c54694 100644
--- a/jsonexample/pubspec.lock
+++ b/jsonexample/pubspec.lock
@@ -7,14 +7,14 @@ packages:
       name: _fe_analyzer_shared
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.39.2+1"
+    version: "0.39.4"
   archive:
     dependency: transitive
     description:
@@ -63,21 +63,21 @@ packages:
       name: build_daemon
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.2"
+    version: "2.1.3"
   build_resolvers:
     dependency: transitive
     description:
       name: build_resolvers
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.3.1"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.2"
+    version: "1.7.3"
   build_runner_core:
     dependency: transitive
     description:
@@ -206,7 +206,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+3"
+    version: "0.12.0+4"
   http_multi_server:
     dependency: transitive
     description:
@@ -414,7 +414,7 @@ packages:
       name: stream_transform
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.20"
+    version: "1.1.0"
   string_scanner:
     dependency: transitive
     description:
diff --git a/web/dad_jokes/pubspec.lock b/web/dad_jokes/pubspec.lock
index 25f228398..ac0182a50 100644
--- a/web/dad_jokes/pubspec.lock
+++ b/web/dad_jokes/pubspec.lock
@@ -33,7 +33,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_parser:
     dependency: transitive
     description:
@@ -103,4 +103,4 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.4.0 <3.0.0"
diff --git a/web/filipino_cuisine/pubspec.lock b/web/filipino_cuisine/pubspec.lock
index 03bf5157d..8bf49b67c 100644
--- a/web/filipino_cuisine/pubspec.lock
+++ b/web/filipino_cuisine/pubspec.lock
@@ -47,7 +47,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_parser:
     dependency: transitive
     description:
@@ -124,5 +124,5 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.4.0 <3.0.0"
   flutter: ">=0.1.4 <3.0.0"
diff --git a/web/github_dataviz/pubspec.lock b/web/github_dataviz/pubspec.lock
index bbf521c85..12444aa68 100644
--- a/web/github_dataviz/pubspec.lock
+++ b/web/github_dataviz/pubspec.lock
@@ -33,7 +33,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_parser:
     dependency: transitive
     description:
@@ -47,7 +47,7 @@ packages:
       name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.16.0"
+    version: "0.16.1"
   meta:
     dependency: transitive
     description:
@@ -110,4 +110,4 @@ packages:
     source: hosted
     version: "2.0.8"
 sdks:
-  dart: ">=2.2.2 <3.0.0"
+  dart: ">=2.5.0 <3.0.0"
diff --git a/web/slide_puzzle/pubspec.lock b/web/slide_puzzle/pubspec.lock
index 1438b87aa..8131e19ba 100644
--- a/web/slide_puzzle/pubspec.lock
+++ b/web/slide_puzzle/pubspec.lock
@@ -7,14 +7,14 @@ packages:
       name: _fe_analyzer_shared
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.3"
   analyzer:
     dependency: transitive
     description:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.39.2+1"
+    version: "0.39.4"
   archive:
     dependency: transitive
     description:
@@ -115,7 +115,7 @@ packages:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.0+2"
+    version: "0.12.0+4"
   http_multi_server:
     dependency: transitive
     description:
@@ -386,7 +386,7 @@ packages:
       name: vm_service
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.3"
+    version: "2.3.1"
   watcher:
     dependency: transitive
     description:
@@ -416,4 +416,4 @@ packages:
     source: hosted
     version: "2.2.0"
 sdks:
-  dart: ">=2.4.0 <3.0.0"
+  dart: ">=2.6.0 <3.0.0"