diff --git a/unity/Runtime/Components/MjGlobalSettings.cs b/unity/Runtime/Components/MjGlobalSettings.cs
index ad8b7e0f..94675182 100644
--- a/unity/Runtime/Components/MjGlobalSettings.cs
+++ b/unity/Runtime/Components/MjGlobalSettings.cs
@@ -29,7 +29,8 @@ namespace Mujoco {
 // exactly what the documentation specifies: http://mujoco.org/book/XMLreference.html#option .
 public enum IntegratorType {
   Euler,
-  RK4
+  RK4,
+  @implicit
 }
 
 public enum CollisionCheckType {