diff --git a/src/JitterTests/AddRemoveTests.cs b/src/JitterTests/AddRemoveTests.cs
index 6e066ca8..73c17af1 100644
--- a/src/JitterTests/AddRemoveTests.cs
+++ b/src/JitterTests/AddRemoveTests.cs
@@ -10,6 +10,12 @@ public void Setup()
         world = new World();
     }
 
+    [TearDown]
+    public void TearDown()
+    {
+        world.Dispose();
+    }
+
     private class FilterOut(IDynamicTreeProxy shape) : IBroadPhaseFilter
     {
         public bool Filter(IDynamicTreeProxy shapeA, IDynamicTreeProxy shapeB)
diff --git a/src/JitterTests/ConstraintTests.cs b/src/JitterTests/ConstraintTests.cs
index ad12ed4b..225d9dd8 100644
--- a/src/JitterTests/ConstraintTests.cs
+++ b/src/JitterTests/ConstraintTests.cs
@@ -13,7 +13,7 @@ public void Setup()
     [TestCase]
     public void TestSizes()
     {
-        World world = new World();
+        using World world = new World();
 
         RigidBody b0 = world.CreateRigidBody();
         RigidBody b1 = world.CreateRigidBody();
diff --git a/src/JitterTests/StackingTests.cs b/src/JitterTests/StackingTests.cs
index b517f096..d981546b 100644
--- a/src/JitterTests/StackingTests.cs
+++ b/src/JitterTests/StackingTests.cs
@@ -13,6 +13,12 @@ public void Setup()
         };
     }
 
+    [TearDown]
+    public void TearDown()
+    {
+        world.Dispose();
+    }
+
     [TestCase(true)]
     [TestCase(false)]
     public void SimpleStack(bool fullEPA)