diff --git a/core/src/main/java/fr/traqueur/commands/api/CommandManager.java b/core/src/main/java/fr/traqueur/commands/api/CommandManager.java
index a3782e2..73d9560 100644
--- a/core/src/main/java/fr/traqueur/commands/api/CommandManager.java
+++ b/core/src/main/java/fr/traqueur/commands/api/CommandManager.java
@@ -465,9 +465,18 @@ public CommandInvoker<T, S> getInvoker() {
      */
     private void registerInternalConverters() {
         this.registerConverter(String.class, (s) -> s);
+
+        // Register both primitive and wrapper types for DefaultArgumentParser (Spigot/Velocity).
+        // JDA's ArgumentParser handles primitives internally, but text-based platforms need explicit registration.
+        // Wrapper types (Integer.class, Long.class, etc.) are registered for compatibility with wrapper usage.
+        // Primitive types (int.class, long.class, etc.) are registered to support primitive method parameters.
         this.registerConverter(Boolean.class, new BooleanArgument<>());
+        this.registerConverter(boolean.class, new BooleanArgument<>());
         this.registerConverter(Integer.class, new IntegerArgument());
+        this.registerConverter(int.class, new IntegerArgument());
         this.registerConverter(Double.class, new DoubleArgument());
+        this.registerConverter(double.class, new DoubleArgument());
         this.registerConverter(Long.class, new LongArgument());
+        this.registerConverter(long.class, new LongArgument());
     }
 }
diff --git a/gradle.properties b/gradle.properties
index f81469e..8656a1e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-version=5.0.0
\ No newline at end of file
+version=5.0.1
\ No newline at end of file