title: old sklearn version in Jupyter Notebook
body: <p>I update <em>sklearn</em> version by terminal with</p>
  
  <pre><code>conda install scikit-learn=0.18
  </code></pre>
  
  <p>if I list with <code>conda list scikit-learn</code></p>
  
  <pre><code># packages in environment at /Users/Claudia/anaconda:
  scikit-learn              0.18.1              np111py27_1
  scikit-learn              0.18.1                    &lt;pip&gt;
  </code></pre>
  
  <p>but if I run in notebook </p>
  
  <pre><code>print('The scikit-learn version is {}.'.format(sklearn.__version__))
  </code></pre>
  
  <p>the result is</p>
  
  <pre><code>The scikit-learn version is 0.17.1.
  </code></pre>
  
  <p>How can I solve and update also the version in Jupyter Notebook?</p>