diff --git a/pubspec.yaml b/pubspec.yaml
index 54ef550..3b48081 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://labs.phundrak.com/phundrak/org-website-backend
 author: Lucien Cartier-Tilet <lucien@phundrak.com>
 
 environment:
-  sdk: '>=2.5.0 <3.0.0'
+  sdk: '>=2.7.0 <3.0.0'
 
 dependencies:
   html: '^0.14.0+3'