diff --git a/setup.py b/setup.py
index f8ab76a..11a52d8 100755
--- a/setup.py
+++ b/setup.py
@@ -70,6 +70,7 @@ from setupbase import (
     update_submodules,
     require_submodules,
     UpdateSubmodules,
+    CompileCSS,
 )
 from setupext import setupext
 
@@ -236,6 +237,7 @@ setup_args['cmdclass'] = {
     'sdist' : git_prebuild('IPython', sdist),
     'upload_wininst' : UploadWindowsInstallers,
     'submodule' : UpdateSubmodules,
+    'css' : CompileCSS,
 }
 
 #---------------------------------------------------------------------------
diff --git a/setupbase.py b/setupbase.py
index db45a35..ca87fc0 100644
--- a/setupbase.py
+++ b/setupbase.py
@@ -30,6 +30,7 @@ except:
 from distutils.command.build_py import build_py
 from distutils.cmd import Command
 from glob import glob
+from subprocess import call
 
 from setupext import install_data_ext
 
@@ -474,3 +475,26 @@ def require_submodules(command):
                 sys.exit(1)
             command.run(self)
     return DecoratedCommand
+
+#---------------------------------------------------------------------------
+# Notebook related
+#---------------------------------------------------------------------------
+
+class CompileCSS(Command):
+    """Recompile Notebook CSS
+    
+    Regenerate the compiled CSS from LESS sources.
+    
+    Requires various dev dependencies, such as fabric and lessc.
+    """
+    description = "Recompile Notebook CSS"
+    user_options = []
+    
+    def initialize_options(self):
+        pass
+    
+    def finalize_options(self):
+        pass
+    
+    def run(self):
+        call("fab css", shell=True, cwd=pjoin(repo_root, "IPython", "html"))