diff --git a/doc/developers/contributing.rst b/doc/developers/contributing.rst
index 3ce7907947f7a..e14eadf2df720 100644
--- a/doc/developers/contributing.rst
+++ b/doc/developers/contributing.rst
@@ -196,15 +196,22 @@ then submit a "pull request" (PR):
         $ git clone git@github.com:YourLogin/scikit-learn.git
         $ cd scikit-learn
 
- 4. Create a branch to hold your development changes::
+ 4. Install library in editable mode::
+
+        $ pip install --editable .
+
+    for more details about advanced installation, see the 
+    :ref:`install_bleeding_edge` section.
+
+ 5. Create a branch to hold your development changes::
 
         $ git checkout -b my-feature
 
     and start making changes. Always use a ``feature`` branch. It's good practice to
     never work on the ``master`` branch!
 
- 5. Develop the feature on your feature branch on your computer, using Git to do the 
-    version control. When you're done editing, add changed files using ``git add`` 
+ 6. Develop the feature on your feature branch on your computer, using Git to do the
+    version control. When you're done editing, add changed files using ``git add``
     and then ``git commit`` files::
 
         $ git add modified_files
@@ -214,12 +221,17 @@ then submit a "pull request" (PR):
 
         $ git push -u origin my-feature
 
- 6. Follow `these
+ 7. Follow `these
     <https://help.github.com/articles/creating-a-pull-request-from-a-fork>`_
     instructions to create a pull request from your fork. This will send an
     email to the committers. You may want to consider sending an email to the
     mailing list for more visibility.
 
+.. note::
+
+  If you are modifying a Cython module, you have to re-run step 4 after modifications
+  and before testing them.
+
 .. note::
 
   In the above setup, your ``origin`` remote repository points to