diff --git a/build_web_compilers/CHANGELOG.md b/build_web_compilers/CHANGELOG.md
index d09d7ef39..2c6d5ccaa 100644
--- a/build_web_compilers/CHANGELOG.md
+++ b/build_web_compilers/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.0.8
+
+- Allow version 3.4.x of the Dart SDK.
+
 ## 4.0.7
 
 - Support `dart:js_interop_unsafe`.
diff --git a/build_web_compilers/pubspec.yaml b/build_web_compilers/pubspec.yaml
index 159792ad5..44ccddf8a 100644
--- a/build_web_compilers/pubspec.yaml
+++ b/build_web_compilers/pubspec.yaml
@@ -1,10 +1,10 @@
 name: build_web_compilers
-version: 4.0.7
+version: 4.0.8
 description: Builder implementations wrapping the dart2js and DDC compilers.
 repository: https://github.com/dart-lang/build/tree/master/build_web_compilers
 
 environment:
-  sdk: '>=3.1.0 <3.4.0'
+  sdk: '>=3.1.0 <3.5.0'
 
 dependencies:
   analyzer: '>=5.1.0 <7.0.0'