diff --git a/README.md b/README.md
index 68a64fb..0ff9090 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,10 @@ CartoDB Spatial Analysis extension for PostgreSQL.
 * - *src/pg* contains the PostgreSQL extension source code
 * - *src/py* Python module source code
 * *release* reseleased versions
-* *env* base directory for Python virtual environments
 
 ## Requirements
 
-* pip, virtualenv, PostgreSQL
+* pip, PostgreSQL
 * python-scipy system package (see [src/py/README.md](https://github.com/CartoDB/crankshaft/blob/master/src/py/README.md))
 
 # Working Process -- Quickstart Guide
diff --git a/src/py/README.md b/src/py/README.md
index 29a3145..8fcfcb7 100644
--- a/src/py/README.md
+++ b/src/py/README.md
@@ -10,7 +10,6 @@ nosetests test/
 
 ## Notes about Python dependencies
 * This extension is targeted at production databases. Therefore certain restrictions must be assumed about the production environment vs other experimental environments.
-* We're using `pip` and `virtualenv` to generate a suitable isolated environment for python code that has  all the dependencies
 * Every dependency should be:
   - Added to the `setup.py` file
   - Installed through it
@@ -30,21 +29,7 @@ PySAL 1.10 or later, so we'll stick to 1.9.1.
 apt-get install -y python-scipy
 ```
 
-We'll use virtual environments to install our packages,
-but configued to use also system modules so that the
-mentioned scipy and numpy are used.
-
-    # Create a virtual environment for python
-    $ virtualenv --system-site-packages dev
-
-    # Activate the virtualenv
-    $ source dev/bin/activate
-
-    # Install all the requirements
-    # expect this to take a while, as it will trigger a few compilations
-    (dev) $ pip install -I ./crankshaft
-
-#### Test the libraries with that virtual env
+#### Test the libraries
 
 ##### Test numpy library dependency: