diff --git a/repo_support/pubspec.yaml b/repo_support/pubspec.yaml
index d36b1dda..c310b2a4 100644
--- a/repo_support/pubspec.yaml
+++ b/repo_support/pubspec.yaml
@@ -4,7 +4,7 @@ publish_to: none
 deploy_to: none
 
 environment:
-  sdk: '>=2.18.0 <4.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 dependencies:
   process_run: '>=0.10.0'
diff --git a/sembast_test/pubspec.yaml b/sembast_test/pubspec.yaml
index 3a83888b..cb6d4c32 100644
--- a/sembast_test/pubspec.yaml
+++ b/sembast_test/pubspec.yaml
@@ -4,7 +4,7 @@ version: 0.3.0
 publish_to: none
 
 environment:
-  sdk: '>=2.18.0 <4.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 dependencies:
   path: '>=1.6.0'
diff --git a/sembast_web/pubspec.yaml b/sembast_web/pubspec.yaml
index 006ff7bf..abf51c8d 100644
--- a/sembast_web/pubspec.yaml
+++ b/sembast_web/pubspec.yaml
@@ -7,7 +7,7 @@ topics:
   - database
 
 environment:
-  sdk: '>=2.18.0 <4.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 dependencies:
   sembast: '>=3.4.3 <5.0.0'