DOC: instructions to update an existing install

docs/Installation.rst

@@ -318,6 +318,18 @@ Example usage, with the relevant output at the start of stage 1 of the bootstrap
           Source tarballs for all three EasyBuild components *must* be provided when ``$EASYBUILD_BOOTSTRAP_SOURCEPATH``
           is defined, however.
 
+.. _updating:
+
+Updating an existing EasyBuild installation
+-------------------------------------------
+
+To upgrade to a newer EasyBuild version (say, *x.y.z*) than the one currently installed (say, *a.b.c*), there are several options:
+
+     (i) (re)bootstrap EasyBuild to obtain an EasyBuild/x.y.z module to load, using the instructions above, see :ref:`bootstrapping`.
+     (ii) install EasyBuild x.y.z with a previous version of EasyBuild, using the easyconfig file available `on the develop branch at Github <https://github.com/hpcugent/easybuild-easyconfigs/tree/develop/easybuild/easyconfigs/e/EasyBuild>`__
+     (iii) install EasyBuild x.y.z from PyPI, using one of the standard Python installation tools (easy_install, pip, ...)
+     (iv) update your Git working copies of the different EasyBuild repositories
+
 .. _dependencies:
 
 Dependencies