diff --git a/example/main.dart b/example/main.dart
index b3349d1..b0f782b 100644
--- a/example/main.dart
+++ b/example/main.dart
@@ -77,6 +77,7 @@ class _FontConfig {
       {required this.family,
       required this.url,
       this.testString = _successMessage,
+      // ignore: unused_element_parameter
       this.expectLoad = true});
 }
 
diff --git a/example/unload.dart b/example/unload.dart
index b2e1e04..a97815e 100644
--- a/example/unload.dart
+++ b/example/unload.dart
@@ -91,6 +91,7 @@ class _FontConfig {
       {required this.family,
       required this.url,
       this.group = FontFaceObserver.defaultGroup,
+      // ignore: unused_element_parameter
       this.key = ''});
 }
 
diff --git a/pubspec.yaml b/pubspec.yaml
index 56401c2..1f69bd0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -8,7 +8,7 @@ environment:
 
 dev_dependencies:
   build_runner: ^2.0.0
-  build_test: ^2.0.0
+  build_test: '>=2.0.0 <4.0.0'
   build_web_compilers: '>=3.0.0 <5.0.0'
   test: ^1.16.8
   workiva_analysis_options: ^1.0.1