diff --git a/docs/themes.rst b/docs/themes.rst
index 763397f..e894b05 100644
--- a/docs/themes.rst
+++ b/docs/themes.rst
@@ -30,10 +30,6 @@ Sigal comes with three themes, located in the ``sigal/themes`` folder:
     `source <http://photoswipe.com/>`__, `demo
     <http://saimon.org/sigal-demo/photoswipe/>`__.
 
-For developers, a Makefile is available to concatenate and minify the css
-files, using `cssmin <https://pypi.python.org/pypi/cssmin>`_ (``pip install
-cssmin``).
-
 Variables
 ~~~~~~~~~
 
diff --git a/requirements.txt b/requirements.txt
index 1a25948..38eaa95 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,6 @@ blinker
 boto
 click
 coverage
-cssmin
 feedgenerator
 Jinja2
 Markdown
diff --git a/setup.py b/setup.py
index b36fd92..88d925e 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,6 @@ setup(
                       'pilkit'],
     test_requires=['pytest'],
     extras_require={
-        'CSS':  ['cssmin'],
         'S3': ['boto']
     },
     entry_points={