diff --git a/src/Alba/Security/AuthenticationStub.cs b/src/Alba/Security/AuthenticationStub.cs
index 9028ef6a..b0c41b7b 100644
--- a/src/Alba/Security/AuthenticationStub.cs
+++ b/src/Alba/Security/AuthenticationStub.cs
@@ -36,7 +36,7 @@ IHostBuilder IAlbaExtension.Configure(IHostBuilder builder)
                 services.AddSingleton(this);
                 services.AddAuthentication("Test")
                     .AddScheme<AuthenticationSchemeOptions, TestAuthHandler>(
-                        "Test", o => {});
+                        "Test", _ => {});
             });
         }
 
diff --git a/src/Alba/Serialization/FormatterSerializer.cs b/src/Alba/Serialization/FormatterSerializer.cs
index 3dd019bf..76149326 100644
--- a/src/Alba/Serialization/FormatterSerializer.cs
+++ b/src/Alba/Serialization/FormatterSerializer.cs
@@ -30,7 +30,7 @@ public Stream Write<T>(T body)
 
             var writer = new StreamWriter(stream);
             var outputContext =
-                new OutputFormatterWriteContext(stubContext, (s, e) => writer, typeof(T), body);
+                new OutputFormatterWriteContext(stubContext, (_, _) => writer, typeof(T), body);
             _output.WriteAsync(outputContext).GetAwaiter().GetResult();
 
             return stream;
@@ -56,7 +56,7 @@ public T Read<T>(ScenarioResult response)
 
                 if (buffer.Length == 0) throw new EmptyResponseException();
 
-                var inputContext = new InputFormatterContext(standinContext, typeof(T).Name, new ModelStateDictionary(), metadata, (s, e) => new StreamReader(s));
+                var inputContext = new InputFormatterContext(standinContext, typeof(T).Name, new ModelStateDictionary(), metadata, (s, _) => new StreamReader(s));
                 var result = _input.ReadAsync(inputContext).GetAwaiter().GetResult();
 
                 if (result.HasError)
@@ -98,7 +98,7 @@ public async Task<T> ReadAsync<T>(ScenarioResult response)
 
                 if (buffer.Length == 0) throw new EmptyResponseException();
 
-                var inputContext = new InputFormatterContext(standinContext, typeof(T).Name, new ModelStateDictionary(), metadata, (s, e) => new StreamReader(s));
+                var inputContext = new InputFormatterContext(standinContext, typeof(T).Name, new ModelStateDictionary(), metadata, (s, _) => new StreamReader(s));
                 var result = await _input.ReadAsync(inputContext);
 
                 if (result.HasError)