diff --git a/src/python/Lecture4/ControlVariate.ipynb b/src/python/Lecture4/ControlVariate.ipynb
index fbd2ec7..1588c86 100644
--- a/src/python/Lecture4/ControlVariate.ipynb
+++ b/src/python/Lecture4/ControlVariate.ipynb
@@ -5,7 +5,7 @@
    "id": "7bfc594b-6332-4802-a4a4-113bc74e8fa5",
    "metadata": {},
    "source": [
-    "# Monte Carlo methods - Control Variate"
+    "# Monte Carlo methods - Control Variate - NEW CHANGE!"
    ]
   },
   {