[various] Set minimum Flutter versions to 2.8 (#5792)

diff --git a/packages/camera/camera/example/pubspec.yaml b/packages/camera/camera/example/pubspec.yaml
index af4d078..e9ae2c7 100644
--- a/packages/camera/camera/example/pubspec.yaml
+++ b/packages/camera/camera/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   camera:
diff --git a/packages/camera/camera/pubspec.yaml b/packages/camera/camera/pubspec.yaml
index 593e7b5..aca6beb 100644
--- a/packages/camera/camera/pubspec.yaml
+++ b/packages/camera/camera/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/camera/camera_web/example/pubspec.yaml b/packages/camera/camera_web/example/pubspec.yaml
index 911648e..441c6eb 100644
--- a/packages/camera/camera_web/example/pubspec.yaml
+++ b/packages/camera/camera_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/espresso/example/pubspec.yaml b/packages/espresso/example/pubspec.yaml
index 6a5fcdd..c896585 100644
--- a/packages/espresso/example/pubspec.yaml
+++ b/packages/espresso/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/espresso/pubspec.yaml b/packages/espresso/pubspec.yaml
index ac0199c..36b5570 100644
--- a/packages/espresso/pubspec.yaml
+++ b/packages/espresso/pubspec.yaml
@@ -7,7 +7,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/file_selector/file_selector/pubspec.yaml b/packages/file_selector/file_selector/pubspec.yaml
index 7026f7f..1c502c0 100644
--- a/packages/file_selector/file_selector/pubspec.yaml
+++ b/packages/file_selector/file_selector/pubspec.yaml
@@ -7,7 +7,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/file_selector/file_selector_macos/example/pubspec.yaml b/packages/file_selector/file_selector_macos/example/pubspec.yaml
index 2a11958..dbe1272 100644
--- a/packages/file_selector/file_selector_macos/example/pubspec.yaml
+++ b/packages/file_selector/file_selector_macos/example/pubspec.yaml
@@ -5,7 +5,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   file_selector_macos:
diff --git a/packages/file_selector/file_selector_macos/pubspec.yaml b/packages/file_selector/file_selector_macos/pubspec.yaml
index 41077c1..e6f8e9b 100644
--- a/packages/file_selector/file_selector_macos/pubspec.yaml
+++ b/packages/file_selector/file_selector_macos/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/file_selector/file_selector_platform_interface/pubspec.yaml b/packages/file_selector/file_selector_platform_interface/pubspec.yaml
index 4291775..81ad53a 100644
--- a/packages/file_selector/file_selector_platform_interface/pubspec.yaml
+++ b/packages/file_selector/file_selector_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   cross_file: ^0.3.0
diff --git a/packages/file_selector/file_selector_web/example/pubspec.yaml b/packages/file_selector/file_selector_web/example/pubspec.yaml
index 8998587..d8b93ee 100644
--- a/packages/file_selector/file_selector_web/example/pubspec.yaml
+++ b/packages/file_selector/file_selector_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.2.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/file_selector/file_selector_web/pubspec.yaml b/packages/file_selector/file_selector_web/pubspec.yaml
index 4880319..c685cca 100644
--- a/packages/file_selector/file_selector_web/pubspec.yaml
+++ b/packages/file_selector/file_selector_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/file_selector/file_selector_windows/example/pubspec.yaml b/packages/file_selector/file_selector_windows/example/pubspec.yaml
index b66a202..a3e69a6 100644
--- a/packages/file_selector/file_selector_windows/example/pubspec.yaml
+++ b/packages/file_selector/file_selector_windows/example/pubspec.yaml
@@ -5,7 +5,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   file_selector_platform_interface: ^2.0.0
diff --git a/packages/file_selector/file_selector_windows/pubspec.yaml b/packages/file_selector/file_selector_windows/pubspec.yaml
index 152b63e..3ca5680 100644
--- a/packages/file_selector/file_selector_windows/pubspec.yaml
+++ b/packages/file_selector/file_selector_windows/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/flutter_plugin_android_lifecycle/pubspec.yaml b/packages/flutter_plugin_android_lifecycle/pubspec.yaml
index c109d09..8073cdd 100644
--- a/packages/flutter_plugin_android_lifecycle/pubspec.yaml
+++ b/packages/flutter_plugin_android_lifecycle/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
index dbc32b0..196f054 100644
--- a/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   cupertino_icons: ^0.1.0
diff --git a/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
index a294dd0..831f3cc 100644
--- a/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
index 8df31fc..998f319 100644
--- a/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   collection: ^1.15.0
diff --git a/packages/google_maps_flutter/google_maps_flutter_web/example/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_web/example/pubspec.yaml
index 95a3d42..a962e5b 100644
--- a/packages/google_maps_flutter/google_maps_flutter_web/example/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_web/example/pubspec.yaml
@@ -4,7 +4,7 @@
 # Tests require flutter beta or greater to run.
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.1.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   google_maps_flutter_web:
diff --git a/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml b/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
index 271d87d..ca8af82 100644
--- a/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
+++ b/packages/google_maps_flutter/google_maps_flutter_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/google_sign_in/google_sign_in/example/pubspec.yaml b/packages/google_sign_in/google_sign_in/example/pubspec.yaml
index af9ed87..822f838 100644
--- a/packages/google_sign_in/google_sign_in/example/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/google_sign_in/google_sign_in/pubspec.yaml b/packages/google_sign_in/google_sign_in/pubspec.yaml
index d1c13c6..2a287b1 100644
--- a/packages/google_sign_in/google_sign_in/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/google_sign_in/google_sign_in_android/example/pubspec.yaml b/packages/google_sign_in/google_sign_in_android/example/pubspec.yaml
index 316cdd8..3aa8a80 100644
--- a/packages/google_sign_in/google_sign_in_android/example/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/google_sign_in/google_sign_in_ios/example/pubspec.yaml b/packages/google_sign_in/google_sign_in_ios/example/pubspec.yaml
index f2d32c5..ed51e3b 100644
--- a/packages/google_sign_in/google_sign_in_ios/example/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_ios/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
index 0deafe8..9f6ab50 100644
--- a/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker/example/pubspec.yaml b/packages/image_picker/image_picker/example/pubspec.yaml
index 4fe8235..23c682a 100755
--- a/packages/image_picker/image_picker/example/pubspec.yaml
+++ b/packages/image_picker/image_picker/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker/pubspec.yaml b/packages/image_picker/image_picker/pubspec.yaml
index 9d0cede..acc085a 100755
--- a/packages/image_picker/image_picker/pubspec.yaml
+++ b/packages/image_picker/image_picker/pubspec.yaml
@@ -7,7 +7,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/image_picker/image_picker_android/example/pubspec.yaml b/packages/image_picker/image_picker_android/example/pubspec.yaml
index 0d88ae1..b5afb16 100755
--- a/packages/image_picker/image_picker_android/example/pubspec.yaml
+++ b/packages/image_picker/image_picker_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker_android/pubspec.yaml b/packages/image_picker/image_picker_android/pubspec.yaml
index 0955346..6accfb0 100755
--- a/packages/image_picker/image_picker_android/pubspec.yaml
+++ b/packages/image_picker/image_picker_android/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/image_picker/image_picker_for_web/example/pubspec.yaml b/packages/image_picker/image_picker_for_web/example/pubspec.yaml
index a9d6c7b..72316ee 100644
--- a/packages/image_picker/image_picker_for_web/example/pubspec.yaml
+++ b/packages/image_picker/image_picker_for_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.2.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker_for_web/pubspec.yaml b/packages/image_picker/image_picker_for_web/pubspec.yaml
index 0b2c6d2..508e32a 100644
--- a/packages/image_picker/image_picker_for_web/pubspec.yaml
+++ b/packages/image_picker/image_picker_for_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/image_picker/image_picker_ios/example/pubspec.yaml b/packages/image_picker/image_picker_ios/example/pubspec.yaml
index a47893d..84fa77e 100755
--- a/packages/image_picker/image_picker_ios/example/pubspec.yaml
+++ b/packages/image_picker/image_picker_ios/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker_platform_interface/pubspec.yaml b/packages/image_picker/image_picker_platform_interface/pubspec.yaml
index be6d544..4ce1d2f 100644
--- a/packages/image_picker/image_picker_platform_interface/pubspec.yaml
+++ b/packages/image_picker/image_picker_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   cross_file: ^0.3.1+1
diff --git a/packages/image_picker/image_picker_windows/example/pubspec.yaml b/packages/image_picker/image_picker_windows/example/pubspec.yaml
index 68c9395..df1dd49 100644
--- a/packages/image_picker/image_picker_windows/example/pubspec.yaml
+++ b/packages/image_picker/image_picker_windows/example/pubspec.yaml
@@ -5,7 +5,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/image_picker/image_picker_windows/pubspec.yaml b/packages/image_picker/image_picker_windows/pubspec.yaml
index af96030..3b6fd92 100644
--- a/packages/image_picker/image_picker_windows/pubspec.yaml
+++ b/packages/image_picker/image_picker_windows/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/in_app_purchase/in_app_purchase/example/pubspec.yaml b/packages/in_app_purchase/in_app_purchase/example/pubspec.yaml
index 4a79b19..9db9d63 100644
--- a/packages/in_app_purchase/in_app_purchase/example/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/in_app_purchase/in_app_purchase/pubspec.yaml b/packages/in_app_purchase/in_app_purchase/pubspec.yaml
index 4b9b9b7..23d771c 100644
--- a/packages/in_app_purchase/in_app_purchase/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/in_app_purchase/in_app_purchase_android/example/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_android/example/pubspec.yaml
index 9c16efc..0d37b3d 100644
--- a/packages/in_app_purchase/in_app_purchase_android/example/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.9.1+hotfix.2"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
index 1032519..277be29 100644
--- a/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_android/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/in_app_purchase/in_app_purchase_platform_interface/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_platform_interface/pubspec.yaml
index 2a0a6bf..98698b8 100644
--- a/packages/in_app_purchase/in_app_purchase_platform_interface/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/example/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_storekit/example/pubspec.yaml
index 597dfb0..a98e169 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/example/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_storekit/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml b/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
index ebd5e55..b154ff3 100644
--- a/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
+++ b/packages/in_app_purchase/in_app_purchase_storekit/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/ios_platform_images/example/pubspec.yaml b/packages/ios_platform_images/example/pubspec.yaml
index aa8fea5..10be0d6 100644
--- a/packages/ios_platform_images/example/pubspec.yaml
+++ b/packages/ios_platform_images/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   cupertino_icons: ^1.0.2
diff --git a/packages/ios_platform_images/pubspec.yaml b/packages/ios_platform_images/pubspec.yaml
index 4ff67ee..1ce98c1 100644
--- a/packages/ios_platform_images/pubspec.yaml
+++ b/packages/ios_platform_images/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/local_auth/local_auth/example/pubspec.yaml b/packages/local_auth/local_auth/example/pubspec.yaml
index c8496fc..305005b 100644
--- a/packages/local_auth/local_auth/example/pubspec.yaml
+++ b/packages/local_auth/local_auth/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider/example/pubspec.yaml b/packages/path_provider/path_provider/example/pubspec.yaml
index a279bba..ea6f499 100644
--- a/packages/path_provider/path_provider/example/pubspec.yaml
+++ b/packages/path_provider/path_provider/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider/pubspec.yaml b/packages/path_provider/path_provider/pubspec.yaml
index 6ca8325..1e73497 100644
--- a/packages/path_provider/path_provider/pubspec.yaml
+++ b/packages/path_provider/path_provider/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/path_provider/path_provider_android/example/pubspec.yaml b/packages/path_provider/path_provider_android/example/pubspec.yaml
index 75617d8..d546d9f 100644
--- a/packages/path_provider/path_provider_android/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_ios/example/pubspec.yaml b/packages/path_provider/path_provider_ios/example/pubspec.yaml
index 2166076..00ac1f1 100644
--- a/packages/path_provider/path_provider_ios/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_ios/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_linux/example/pubspec.yaml b/packages/path_provider/path_provider_linux/example/pubspec.yaml
index 252f351..47ed4be 100644
--- a/packages/path_provider/path_provider_linux/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_linux/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_linux/pubspec.yaml b/packages/path_provider/path_provider_linux/pubspec.yaml
index 16438a3..46e248f 100644
--- a/packages/path_provider/path_provider_linux/pubspec.yaml
+++ b/packages/path_provider/path_provider_linux/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/path_provider/path_provider_macos/example/pubspec.yaml b/packages/path_provider/path_provider_macos/example/pubspec.yaml
index d8b9354..42ed28b 100644
--- a/packages/path_provider/path_provider_macos/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_macos/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_macos/pubspec.yaml b/packages/path_provider/path_provider_macos/pubspec.yaml
index 444165b..4381041 100644
--- a/packages/path_provider/path_provider_macos/pubspec.yaml
+++ b/packages/path_provider/path_provider_macos/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/path_provider/path_provider_platform_interface/pubspec.yaml b/packages/path_provider/path_provider_platform_interface/pubspec.yaml
index 90b40ac..92ec432 100644
--- a/packages/path_provider/path_provider_platform_interface/pubspec.yaml
+++ b/packages/path_provider/path_provider_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_windows/example/pubspec.yaml b/packages/path_provider/path_provider_windows/example/pubspec.yaml
index d943347..d482196 100644
--- a/packages/path_provider/path_provider_windows/example/pubspec.yaml
+++ b/packages/path_provider/path_provider_windows/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/path_provider/path_provider_windows/pubspec.yaml b/packages/path_provider/path_provider_windows/pubspec.yaml
index 49afdd6..f75dd05 100644
--- a/packages/path_provider/path_provider_windows/pubspec.yaml
+++ b/packages/path_provider/path_provider_windows/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/quick_actions/quick_actions/example/pubspec.yaml b/packages/quick_actions/quick_actions/example/pubspec.yaml
index c4ee860..64e61b7 100644
--- a/packages/quick_actions/quick_actions/example/pubspec.yaml
+++ b/packages/quick_actions/quick_actions/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.9.1+hotfix.2"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/quick_actions/quick_actions_platform_interface/pubspec.yaml b/packages/quick_actions/quick_actions_platform_interface/pubspec.yaml
index aef2e24..c465b2a 100644
--- a/packages/quick_actions/quick_actions_platform_interface/pubspec.yaml
+++ b/packages/quick_actions/quick_actions_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences/example/pubspec.yaml b/packages/shared_preferences/shared_preferences/example/pubspec.yaml
index 1cb0f18..4ec5cbb 100644
--- a/packages/shared_preferences/shared_preferences/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences/pubspec.yaml b/packages/shared_preferences/shared_preferences/pubspec.yaml
index 14b56fe..a1cea06 100644
--- a/packages/shared_preferences/shared_preferences/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences/pubspec.yaml
@@ -7,7 +7,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/shared_preferences/shared_preferences_android/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_android/example/pubspec.yaml
index 060b94b..d23270b 100644
--- a/packages/shared_preferences/shared_preferences_android/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_ios/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_ios/example/pubspec.yaml
index 4a00e6d..9f5f712 100644
--- a/packages/shared_preferences/shared_preferences_ios/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_ios/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_linux/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_linux/example/pubspec.yaml
index d34973b..4d44d4e 100644
--- a/packages/shared_preferences/shared_preferences_linux/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_linux/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_linux/pubspec.yaml b/packages/shared_preferences/shared_preferences_linux/pubspec.yaml
index 8f3ce17..9224372 100644
--- a/packages/shared_preferences/shared_preferences_linux/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_linux/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/shared_preferences/shared_preferences_macos/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_macos/example/pubspec.yaml
index d6f07f8..b9dfb75 100644
--- a/packages/shared_preferences/shared_preferences_macos/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_macos/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.12.8"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_macos/pubspec.yaml b/packages/shared_preferences/shared_preferences_macos/pubspec.yaml
index 615d0b0..9259ef5 100644
--- a/packages/shared_preferences/shared_preferences_macos/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_macos/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/shared_preferences/shared_preferences_platform_interface/pubspec.yaml b/packages/shared_preferences/shared_preferences_platform_interface/pubspec.yaml
index 8d775ab..43669d6 100644
--- a/packages/shared_preferences/shared_preferences_platform_interface/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_platform_interface/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_web/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_web/example/pubspec.yaml
index 832ba91..656fdeb 100644
--- a/packages/shared_preferences/shared_preferences_web/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.2.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_web/pubspec.yaml b/packages/shared_preferences/shared_preferences_web/pubspec.yaml
index 9ff76d2..c509583 100644
--- a/packages/shared_preferences/shared_preferences_web/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/shared_preferences/shared_preferences_windows/example/pubspec.yaml b/packages/shared_preferences/shared_preferences_windows/example/pubspec.yaml
index 96762e9..c7a0eb8 100644
--- a/packages/shared_preferences/shared_preferences_windows/example/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_windows/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/shared_preferences/shared_preferences_windows/pubspec.yaml b/packages/shared_preferences/shared_preferences_windows/pubspec.yaml
index 99326cb..57e086b 100644
--- a/packages/shared_preferences/shared_preferences_windows/pubspec.yaml
+++ b/packages/shared_preferences/shared_preferences_windows/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/url_launcher/url_launcher/example/pubspec.yaml b/packages/url_launcher/url_launcher/example/pubspec.yaml
index 3b2bba9..43b5265 100644
--- a/packages/url_launcher/url_launcher/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher/pubspec.yaml b/packages/url_launcher/url_launcher/pubspec.yaml
index 2cf75df..319b6bf 100644
--- a/packages/url_launcher/url_launcher/pubspec.yaml
+++ b/packages/url_launcher/url_launcher/pubspec.yaml
@@ -7,7 +7,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/url_launcher/url_launcher_android/example/pubspec.yaml b/packages/url_launcher/url_launcher_android/example/pubspec.yaml
index 9af7b28..cdb1945 100644
--- a/packages/url_launcher/url_launcher_android/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_android/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_ios/example/pubspec.yaml b/packages/url_launcher/url_launcher_ios/example/pubspec.yaml
index da4c72c..2e39e92 100644
--- a/packages/url_launcher/url_launcher_ios/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_ios/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_linux/example/pubspec.yaml b/packages/url_launcher/url_launcher_linux/example/pubspec.yaml
index 5e6c3fc..90ea19d 100644
--- a/packages/url_launcher/url_launcher_linux/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_linux/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_linux/pubspec.yaml b/packages/url_launcher/url_launcher_linux/pubspec.yaml
index c947204..0bbd4b5 100644
--- a/packages/url_launcher/url_launcher_linux/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_linux/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/url_launcher/url_launcher_macos/example/pubspec.yaml b/packages/url_launcher/url_launcher_macos/example/pubspec.yaml
index 9bc3062..2652df0 100644
--- a/packages/url_launcher/url_launcher_macos/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_macos/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_macos/pubspec.yaml b/packages/url_launcher/url_launcher_macos/pubspec.yaml
index edda6b6..8f93e57 100644
--- a/packages/url_launcher/url_launcher_macos/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_macos/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml b/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
index cdbdfef..140a1ae 100644
--- a/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_web/example/pubspec.yaml b/packages/url_launcher/url_launcher_web/example/pubspec.yaml
index bface46..a25f4ce 100644
--- a/packages/url_launcher/url_launcher_web/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.2.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_windows/example/pubspec.yaml b/packages/url_launcher/url_launcher_windows/example/pubspec.yaml
index 08350fd..22b524d 100644
--- a/packages/url_launcher/url_launcher_windows/example/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_windows/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.20.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/url_launcher/url_launcher_windows/pubspec.yaml b/packages/url_launcher/url_launcher_windows/pubspec.yaml
index c3f224e..2717e38 100644
--- a/packages/url_launcher/url_launcher_windows/pubspec.yaml
+++ b/packages/url_launcher/url_launcher_windows/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/video_player/video_player_web/example/pubspec.yaml b/packages/video_player/video_player_web/example/pubspec.yaml
index bc70b7d..6fb2cd0 100644
--- a/packages/video_player/video_player_web/example/pubspec.yaml
+++ b/packages/video_player/video_player_web/example/pubspec.yaml
@@ -3,7 +3,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.2.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/video_player/video_player_web/pubspec.yaml b/packages/video_player/video_player_web/pubspec.yaml
index 04fba27..36b89ab 100644
--- a/packages/video_player/video_player_web/pubspec.yaml
+++ b/packages/video_player/video_player_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.0.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/webview_flutter/webview_flutter/example/pubspec.yaml b/packages/webview_flutter/webview_flutter/example/pubspec.yaml
index ae3b57e..f1da7cd 100644
--- a/packages/webview_flutter/webview_flutter/example/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter/example/pubspec.yaml
@@ -4,7 +4,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/webview_flutter/webview_flutter/pubspec.yaml b/packages/webview_flutter/webview_flutter/pubspec.yaml
index 9639b6a..fc1e50f 100644
--- a/packages/webview_flutter/webview_flutter/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/webview_flutter/webview_flutter_android/pubspec.yaml b/packages/webview_flutter/webview_flutter_android/pubspec.yaml
index d6cf2b2..04da12f 100644
--- a/packages/webview_flutter/webview_flutter_android/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_android/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/webview_flutter/webview_flutter_platform_interface/pubspec.yaml b/packages/webview_flutter/webview_flutter_platform_interface/pubspec.yaml
index c339a0f..b3a20f8 100644
--- a/packages/webview_flutter/webview_flutter_platform_interface/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_platform_interface/pubspec.yaml
@@ -8,7 +8,7 @@
 
 environment:
   sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 dependencies:
   flutter:
diff --git a/packages/webview_flutter/webview_flutter_web/pubspec.yaml b/packages/webview_flutter/webview_flutter_web/pubspec.yaml
index a834c9b..6464e20 100644
--- a/packages/webview_flutter/webview_flutter_web/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_web/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin:
diff --git a/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml b/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
index d85bf32..9ce70bc 100644
--- a/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
+++ b/packages/webview_flutter/webview_flutter_wkwebview/pubspec.yaml
@@ -6,7 +6,7 @@
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
-  flutter: ">=2.5.0"
+  flutter: ">=2.8.0"
 
 flutter:
   plugin: