diff --git a/packages/iabtcf_consent_info/pubspec.yaml b/packages/iabtcf_consent_info/pubspec.yaml
index d9fd284..f80cd68 100644
--- a/packages/iabtcf_consent_info/pubspec.yaml
+++ b/packages/iabtcf_consent_info/pubspec.yaml
@@ -8,7 +8,7 @@ repository: https://github.com/blaugold/iabtcf_consent_info
 issue_tracker: https://github.com/blaugold/iabtcf_consent_info/issues
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
   flutter: ">=1.10.0"
 
 dependencies:
diff --git a/packages/iabtcf_consent_info_platform_interface/pubspec.yaml b/packages/iabtcf_consent_info_platform_interface/pubspec.yaml
index 0772dfd..39631dd 100644
--- a/packages/iabtcf_consent_info_platform_interface/pubspec.yaml
+++ b/packages/iabtcf_consent_info_platform_interface/pubspec.yaml
@@ -5,7 +5,7 @@ repository: https://github.com/blaugold/iabtcf_consent_info
 issue_tracker: https://github.com/blaugold/iabtcf_consent_info/issues
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
   flutter: ">=1.10.0"
 
 dependencies:
diff --git a/packages/iabtcf_consent_info_web/pubspec.yaml b/packages/iabtcf_consent_info_web/pubspec.yaml
index 0f5f0df..d3cab38 100644
--- a/packages/iabtcf_consent_info_web/pubspec.yaml
+++ b/packages/iabtcf_consent_info_web/pubspec.yaml
@@ -5,7 +5,7 @@ repository: https://github.com/blaugold/iabtcf_consent_info
 issue_tracker: https://github.com/blaugold/iabtcf_consent_info/issues
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
   flutter: ">=1.20.0"
 
 dependencies:
diff --git a/pubspec.yaml b/pubspec.yaml
index 9a2e3ab..28ac7b5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: iabtcf_consent_info_repo
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.12.0 <4.0.0'
   flutter: '>=1.20.0'
 
 dev_dependencies: