diff --git a/README.rst b/README.rst
index 109a215..231fab8 100755
--- a/README.rst
+++ b/README.rst
@@ -14,12 +14,7 @@ in the book “Crowds in equations: an introduction to the microscopic modeling
 of crowds” by B. Maury (ENS Ulm & Univ. Paris-Sud) and S. Faure (CNRS), World
 Scientific 2018, Advanced textbooks in mathematics.
 
-
-Installation (Python 3)
-========================
-
-With Pypi
----------
+Installation with Pypi:
 
 .. code::
 
@@ -32,8 +27,7 @@ or
    pip install cromosim --user
 
 
-From source
------------
+Installation from source:
 
 You can also clone the project
 
@@ -48,7 +42,6 @@ and then use the command
    python setup.py install
 
 
-Documentation
-=============
+Documentation:
 
 `<http://www.cromosim.fr>`_
diff --git a/requirements.txt b/requirements.txt
index b4e81fd..7bcbf9e 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,5 +5,5 @@ matplotlib >=3.1.3
 numpydoc >=0.7.0
 sphinx >=1.6.3
 scikit-fmm >=0.0.9
-cvxopt >= 1.2.0
-imageio>=2.8.0
+cvxopt >=1.2.0
+imageio >=2.8.0
diff --git a/setup.py b/setup.py
index 2064ed6..217a754 100755
--- a/setup.py
+++ b/setup.py
@@ -37,6 +37,7 @@ def write_version_py(filename='cromosim/version.py'):
     name           = "cromosim",
     version        = VERSION,
     description    = README[0],
+    long_description_content_type = 'text/x-rst',
     long_description = "".join(README[1:]),
     author         = "Sylvain Faure, Bertrand Maury",
     author_email   = "sylvain.faure@math.u-psud.fr, bertrand.maury@math.u-psud.fr",