diff --git a/tutorials/key_differences_between_python_2_and_3.html b/tutorials/key_differences_between_python_2_and_3.html
index c8b8cbe..74d5094 100644
--- a/tutorials/key_differences_between_python_2_and_3.html
+++ b/tutorials/key_differences_between_python_2_and_3.html
@@ -2868,7 +2868,26 @@ In [8]:
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 <div class="text_cell_render border-box-sizing rendered_html">
-<p><strong>Note</strong><br />Some people pointed out the speed difference between Python 3's <code>range()</code> and Python2's <code>xrange()</code>. Since they are implemented the same way one would expect the same speed. However the difference here just comes from the fact that Python 3 generally tends to run slower than Python 2.</p>
+<p><br> <br></p>
+</div>
+</div>
+</div>
+<div class="cell border-box-sizing text_cell rendered">
+<div class="prompt input_prompt">
+</div>
+<div class="inner_cell">
+<div class="text_cell_render border-box-sizing rendered_html">
+<h4 id="Note-about-the-speed-differences-in-Python-2-and-3">Note about the speed differences in Python 2 and 3<a class="anchor-link" href="#Note-about-the-speed-differences-in-Python-2-and-3">&#182;</a></h4>
+</div>
+</div>
+</div>
+
+<div class="cell border-box-sizing text_cell rendered">
+<div class="prompt input_prompt">
+</div>
+<div class="inner_cell">
+<div class="text_cell_render border-box-sizing rendered_html">
+<p>Some people pointed out the speed difference between Python 3's <code>range()</code> and Python2's <code>xrange()</code>. Since they are implemented the same way one would expect the same speed. However the difference here just comes from the fact that Python 3 generally tends to run slower than Python 2.</p>
 </div>
 </div>
 </div>
diff --git a/tutorials/key_differences_between_python_2_and_3.ipynb b/tutorials/key_differences_between_python_2_and_3.ipynb
index 79065ea..8b2577a 100644
--- a/tutorials/key_differences_between_python_2_and_3.ipynb
+++ b/tutorials/key_differences_between_python_2_and_3.ipynb
@@ -1,7 +1,7 @@
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+  "signature": "sha256:eb93a4258ce700755924939b5dc873c027a656b1faafcd0228616b8575378418"
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@@ -881,7 +881,22 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "**Note**  \n",
+      "<br>\n",
+      "<br>"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 4,
+     "metadata": {},
+     "source": [
+      "Note about the speed differences in Python 2 and 3"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
       "Some people pointed out the speed difference between Python 3's `range()` and Python2's `xrange()`. Since they are implemented the same way one would expect the same speed. However the difference here just comes from the fact that Python 3 generally tends to run slower than Python 2. "
      ]
     },