diff --git a/dwds/test/build/min_sdk_test.dart b/dwds/test/build/min_sdk_test.dart
index d4af9ceed..4cc13c929 100644
--- a/dwds/test/build/min_sdk_test.dart
+++ b/dwds/test/build/min_sdk_test.dart
@@ -19,7 +19,7 @@ void main() {
     sdkVersion = Version(sdkVersion.major, sdkVersion.minor, 0);
 
     final sdkConstraint = VersionConstraint.compatibleWith(sdkVersion);
-    final pubspecSdkConstraint = pubspec.environment?['sdk'];
+    final pubspecSdkConstraint = pubspec.environment['sdk'];
     expect(pubspecSdkConstraint, isNotNull);
     expect(
       sdkConstraint.allowsAll(pubspecSdkConstraint!),
diff --git a/webdev/test/build/min_sdk_test.dart b/webdev/test/build/min_sdk_test.dart
index 1e37a280f..84afbed1a 100644
--- a/webdev/test/build/min_sdk_test.dart
+++ b/webdev/test/build/min_sdk_test.dart
@@ -19,7 +19,7 @@ void main() {
     sdkVersion = Version(sdkVersion.major, sdkVersion.minor, 0);
 
     final sdkConstraint = VersionConstraint.compatibleWith(sdkVersion);
-    final pubspecSdkConstraint = pubspec.environment!['sdk']!;
+    final pubspecSdkConstraint = pubspec.environment['sdk']!;
     expect(sdkConstraint.allowsAll(pubspecSdkConstraint), true,
         reason:
             'Min sdk constraint is outdated. Please update SDK constraint in '