diff --git a/REQUIREMENTS.txt b/REQUIREMENTS.txt
new file mode 100644
index 00000000..ede74b84
--- /dev/null
+++ b/REQUIREMENTS.txt
@@ -0,0 +1,24 @@
+Build Requirements
+------------------
+
+* Python 2.6
+* `Numpy <http://numpy.scipy.org/>`_
+* `Scipy <http://www.scipy.org/>`_
+* `Cython <http://www.cython.org/>`_
+
+Optional Requirements
+---------------------
+
+You can use this Scikit with the basic requirements listed above, but additional libraries are required for image I/O and some image processing/analysis capabilities.
+
+`Open CV <http://opencv.willowgarage.com/wiki/>`_ (>= 2.0). 
+   Required for functions in ``scikits.image.opencv``.
+
+`Python Imaging Library (PIL) <http://www.pythonware.com/products/pil/>`_
+   Used for ``scikits.io.imread`` and ``scikits.io.imsave``.
+
+`PyQt4 <http://wiki.python.org/moin/PyQt>`_
+   Used for ``scikits.io.imshow``.
+
+`PyGTK <http://www.pygtk.org/>`_
+   Used for ``scikits.io.imshow``.
diff --git a/doc/source/install.txt b/doc/source/install.txt
index b5e69fa5..cf2ea19a 100644
--- a/doc/source/install.txt
+++ b/doc/source/install.txt
@@ -23,3 +23,4 @@ in-place::
 
   python setup.py build_ext -i
 
+.. include:: ../../REQUIREMENTS.txt