diff --git a/cloud-core/src/main/java/cloud/commandframework/CommandBean.java b/cloud-core/src/main/java/cloud/commandframework/CommandBean.java
index 30df141ab..f7b65021d 100644
--- a/cloud-core/src/main/java/cloud/commandframework/CommandBean.java
+++ b/cloud-core/src/main/java/cloud/commandframework/CommandBean.java
@@ -95,7 +95,7 @@ protected CommandBean() {
      * @param builder the command builder
      * @return the updated builder
      */
-    protected abstract Command.@NonNull Builder<C> configure(Command.@NonNull Builder<C> builder);
+    protected abstract Command.@NonNull Builder<? extends C> configure(Command.@NonNull Builder<C> builder);
 
     /**
      * Default command handler for this command bean. Does nothing unless override.
diff --git a/cloud-core/src/test/java/cloud/commandframework/CommandBeanTest.java b/cloud-core/src/test/java/cloud/commandframework/CommandBeanTest.java
index 2d9aadab2..3d970147a 100644
--- a/cloud-core/src/test/java/cloud/commandframework/CommandBeanTest.java
+++ b/cloud-core/src/test/java/cloud/commandframework/CommandBeanTest.java
@@ -67,7 +67,8 @@ void testCommandBeanRegistration() {
         assertThat(command.commandExecutionHandler()).isEqualTo(testCommandBean);
     }
 
-    public static class TestCommandBean extends CommandBean<TestCommandSender> {
+
+    public static final class TestCommandBean extends CommandBean<TestCommandSender> {
 
         @Override
         protected @NonNull CommandProperties properties() {
@@ -80,8 +81,16 @@ public static class TestCommandBean extends CommandBean<TestCommandSender> {
         }
 
         @Override
-        protected Command.@NonNull Builder<TestCommandSender> configure(final Command.@NonNull Builder<TestCommandSender> builder) {
-            return builder.required("argument", IntegerParser.integerParser());
+        protected Command.@NonNull Builder<? extends TestCommandSender> configure(
+                final Command.@NonNull Builder<TestCommandSender> builder
+        ) {
+            return builder.senderType(ChildTestCommandSender.class)
+                    .required("argument", IntegerParser.integerParser());
         }
     }
+
+
+    public static final class ChildTestCommandSender extends TestCommandSender {
+
+    }
 }