diff --git a/packages/at_cli/README.md b/packages/at_cli/README.md
index 3739e80..c65a827 100644
--- a/packages/at_cli/README.md
+++ b/packages/at_cli/README.md
@@ -6,7 +6,7 @@ A command line tool to execute verbs on at platform.
 
 ### Building
 
-__Assumption__ - you have the [Dart SDK](https://dart.dev/get-dart) installed. The version should be >= 2.12.0 and <3.0.0.
+__Assumption__ - you have the [Dart SDK](https://dart.dev/get-dart) installed. The version should be >= 2.12.0 and <4.0.0.
 
 First fetch dependencies (as defined in pubspec.yaml):
 
diff --git a/packages/at_dump_atKeys/README.md b/packages/at_dump_atKeys/README.md
index 2845167..6e88b18 100644
--- a/packages/at_dump_atKeys/README.md
+++ b/packages/at_dump_atKeys/README.md
@@ -6,7 +6,7 @@ A command line tool to dump keys from a .atKeys file
 
 ### Building
 
-__Assumption__ - you have the [Dart SDK](https://dart.dev/get-dart) installed. The version should be >= 2.12.0 and <3.0.0.
+__Assumption__ - you have the [Dart SDK](https://dart.dev/get-dart) installed. The version should be >= 2.12.0 and <4.0.0.
 
 First fetch dependencies (as defined in pubspec.yaml):
 
diff --git a/packages/at_pkam/README.md b/packages/at_pkam/README.md
index ae48e84..9de461e 100644
--- a/packages/at_pkam/README.md
+++ b/packages/at_pkam/README.md
@@ -7,7 +7,7 @@ A command line tool to create PKAM authentication tokens.
 ### Building
 
 __Assumption__ - you have the [Dart SDK](https://dart.dev/get-dart) installed.
-The version should be >= 2.12.0 and <3.0.0.
+The version should be >= 2.12.0 and <4.0.0.
 
 First fetch dependencies (as defined in pubspec.yaml):