diff --git a/README.md b/README.md
index 8e26c2e90abc..8ce9987b76db 100644
--- a/README.md
+++ b/README.md
@@ -25,56 +25,53 @@ The **OpenQuake Engine** is an open source application that allows users to comp
 -## Documentation (master tree)
 -->
 
-| Jenkins (Python 2) | Travis CI (Python 3) |
-|       :---:        |         :---:        |
-| [![Build Status](https://ci.openquake.org/job/master_oq-engine/badge/icon)](https://ci.openquake.org/job/master_oq-engine/) | [![Build Status](https://travis-ci.org/gem/oq-engine.svg?branch=master)](https://travis-ci.org/gem/oq-engine) |
+## OpenQuake Engine version 2.7 (Housner)
 
-### Current stable
+Starting from OpenQuake version 2.0 we have introduced a "code name" to honour earthquake scientists.
 
-Current stable version is the **OpenQuake Engine 2.6** 'Gutenberg'. The documentation is available at https://github.com/gem/oq-engine/tree/engine-2.6#openquake-engine.
-* [What's new](https://github.com/gem/oq-engine/blob/engine-2.6/doc/whats-new.md)
-
-## Documentation (master tree)
+The code name for version 2.7 is **Housner**, in memory of [George Housner](https://en.wikipedia.org/wiki/George_W._Housner).
+* [What's new](https://github.com/gem/oq-engine/blob/engine-2.7/doc/whats-new.md)
 
+## Documentation
 <!-- GEM END -->
 
 ### General overview
 
-* [About](https://github.com/gem/oq-engine/blob/master/doc/about.md)
-* [FAQ](https://github.com/gem/oq-engine/blob/master/doc/faq.md)
+* [About](https://github.com/gem/oq-engine/blob/engine-2.7/doc/about.md)
+* [FAQ](https://github.com/gem/oq-engine/blob/engine-2.7/doc/faq.md)
 * [Manuals](http://storage.globalquakemodel.org/openquake/support/documentation/engine/#manual-latest-stable)
-* [OQ Commands](https://github.com/gem/oq-engine/blob/master/doc/oq-commands.md)
+* [OQ Commands](https://github.com/gem/oq-engine/blob/engine-2.7/doc/oq-commands.md)
 * [Source Code/API Documentation](http://docs.openquake.org/oq-engine/)
-* [Development Philosophy and Coding Guidelines](https://github.com/gem/oq-engine/blob/master/doc/development-guidelines.md)
-* [Developers Notes](https://github.com/gem/oq-engine/blob/master/doc/developers-notes.md)
-* [Architecture](https://github.com/gem/oq-engine/blob/master/doc/sphinx/architecture.rst)
-* [Calculation Workflow](https://github.com/gem/oq-engine/blob/master/doc/calculation-workflow.md)
-* [Hardware Suggestions](https://github.com/gem/oq-engine/blob/master/doc/hardware-suggestions.md)
-* [Continuous integration and testing](https://github.com/gem/oq-engine/blob/master/doc/testing.md)
-* [Glossary of Terms](https://github.com/gem/oq-engine/blob/master/doc/glossary.md)
+* [Development Philosophy and Coding Guidelines](https://github.com/gem/oq-engine/blob/engine-2.7/doc/development-guidelines.md)
+* [Developers Notes](https://github.com/gem/oq-engine/blob/engine-2.7/doc/developers-notes.md)
+* [Architecture](https://github.com/gem/oq-engine/blob/engine-2.7/doc/sphinx/architecture.rst)
+* [Calculation Workflow](https://github.com/gem/oq-engine/blob/engine-2.7/doc/calculation-workflow.md)
+* [Hardware Suggestions](https://github.com/gem/oq-engine/blob/engine-2.7/doc/hardware-suggestions.md)
+* [Continuous integration and testing](https://github.com/gem/oq-engine/blob/engine-2.7/doc/testing.md)
+* [Glossary of Terms](https://github.com/gem/oq-engine/blob/engine-2.7/doc/glossary.md)
 
 ### Installation
 
-* [Technology stack and requirements](https://github.com/gem/oq-engine/blob/master/doc/requirements.md)
-* [Which installation method should I use?](https://github.com/gem/oq-engine/blob/master/doc/installing/overview.md)
+* [Technology stack and requirements](https://github.com/gem/oq-engine/blob/engine-2.7/doc/requirements.md)
+* [Which installation method should I use?](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/overview.md)
 
 #### Linux
 
-* [Installing on Ubuntu](https://github.com/gem/oq-engine/blob/master/doc/installing/ubuntu.md)
-* [Installing on RedHat and derivates](https://github.com/gem/oq-engine/blob/master/doc/installing/rhel.md)
-* [Installing on other flavors](https://github.com/gem/oq-engine/blob/master/doc/installing/linux-generic.md)
-* [Installing from sources](https://github.com/gem/oq-engine/blob/master/doc/installing/development.md)
-* [Installing on a cluster](https://github.com/gem/oq-engine/blob/master/doc/installing/cluster.md)
+* [Installing on Ubuntu](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/ubuntu.md)
+* [Installing on RedHat and derivates](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/rhel.md)
+* [Installing on other flavors](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/linux-generic.md)
+* [Installing from sources](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/development.md)
+* [Installing on a cluster](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/cluster.md)
 
 #### macOS
 
-* [Installing on macOS](https://github.com/gem/oq-engine/blob/master/doc/installing/macos.md)
-* [Installing from sources](https://github.com/gem/oq-engine/blob/master/doc/installing/development.md#macos)
+* [Installing on macOS](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/macos.md)
+* [Installing from sources](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/development.md#macos)
 
 #### Windows
 
-* [Installing on Windows](https://github.com/gem/oq-engine/blob/master/doc/installing/windows.md)
-* [Starting the software](https://github.com/gem/oq-engine/blob/master/doc/running/windows.md)
+* [Installing on Windows](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/windows.md)
+* [Starting the software](https://github.com/gem/oq-engine/blob/engine-2.7/doc/running/windows.md)
 
 #### VirtualBox
 
@@ -82,17 +79,17 @@ Current stable version is the **OpenQuake Engine 2.6** 'Gutenberg'. The document
 
 #### Docker
 
-* [Deploy a Docker container](https://github.com/gem/oq-engine/blob/master/doc/installing/docker.md)
+* [Deploy a Docker container](https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/docker.md)
 
 ### Running the OpenQuake Engine
 
-* [Using the command line](https://github.com/gem/oq-engine/blob/master/doc/running/unix.md)
-* [Using the WebUI](https://github.com/gem/oq-engine/blob/master/doc/running/server.md)
+* [Using the command line](https://github.com/gem/oq-engine/blob/engine-2.7/doc/running/unix.md)
+* [Using the WebUI](https://github.com/gem/oq-engine/blob/engine-2.7/doc/running/server.md)
 
 
 ## License
 
-The OpenQuake Engine is released under the **[GNU Affero Public License 3](https://github.com/gem/oq-engine/blob/master/LICENSE)**.
+The OpenQuake Engine is released under the **[GNU Affero Public License 3](https://github.com/gem/oq-engine/blob/engine-2.7/LICENSE)**.
 
 ## Contacts
 
diff --git a/doc/implementing-new-gsim.md b/doc/implementing-new-gsim.md
index da0dd56c3cd5..9937faa73d2f 100644
--- a/doc/implementing-new-gsim.md
+++ b/doc/implementing-new-gsim.md
@@ -10,7 +10,7 @@ https://github.com/gem/oq-engine/tree/master/openquake/hazardlib/gsim
 
 - Create verification tables following the examples that you find here:
 https://github.com/gem/oq-engine/tree/master/openquake/hazardlib/tests/gsim/data
-Usually we create verification tables using an independent code provided by the original authors of the new GMPE. If this is not possible - if available - we use an independent implementation available within code accessible on the web. If verification tables are missing this must be clearly stated as in this example https://github.com/gem/oq-engine/blob/master/openquake/hazardlib/gsim/raghukanth_iyengar_2007.py#L119
+Usually we create verification tables using an independent code provided by the original authors of the new GMPE. If this is not possible - if available - we use an independent implementation available within code accessible on the web. If verification tables are missing this must be clearly stated as in this example https://github.com/gem/oq-engine/blob/engine-2.7/openquake/hazardlib/gsim/raghukanth_iyengar_2007.py#L119
 
 - Create tests for the new GMPE using the examples available here 
 https://github.com/gem/oq-engine/tree/master/openquake/hazardlib/tests/gsim
@@ -23,10 +23,10 @@ nosetests -vsx openquake.hazardlib
 ```
 
 - Update the following .rst file (needed to generate automatically documentation):
-https://github.com/gem/oq-engine/blob/master/doc/sphinx/openquake.hazardlib.gsim.rst
+https://github.com/gem/oq-engine/blob/engine-2.7/doc/sphinx/openquake.hazardlib.gsim.rst
 
 - Check that the new code fulfils PEP8 standards (usually we do this using tools such as flake8 https://pypi.python.org/pypi/flake8) 
 http://legacy.python.org/dev/peps/pep-0008/
 
 - Update the changelog file 
-https://github.com/gem/oq-engine/blob/master/debian/changelog
+https://github.com/gem/oq-engine/blob/engine-2.7/debian/changelog
diff --git a/doc/manual/oqum/introduction.tex b/doc/manual/oqum/introduction.tex
index a6823a9d6e31..527b2c515bab 100644
--- a/doc/manual/oqum/introduction.tex
+++ b/doc/manual/oqum/introduction.tex
@@ -13,7 +13,7 @@
 provides a handy guide for users to choose the most appropriate installation
 method depending on their intended use cases:
 
-\href{https://github.com/gem/oq-engine/blob/master/doc/installing/overview.md}{https://github.com/gem/oq-engine/blob/master/doc/installing/overview.md}.
+\href{https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/overview.md}{https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/overview.md}.
 
 An \gls{acr:oqe} analysis is launched from the command line of a terminal.
 
diff --git a/doc/sphinx/architecture.rst b/doc/sphinx/architecture.rst
index b3465b5415d5..d969b8e06eca 100644
--- a/doc/sphinx/architecture.rst
+++ b/doc/sphinx/architecture.rst
@@ -121,6 +121,6 @@ The WebUI provides a REST API that can be used in third party
 applications: for instance a QGIS plugin could download the maps
 generated by the engine via the WebUI and display them. There is lot
 of functionality in the API which is documented here:
-https://github.com/gem/oq-engine/blob/master/doc/web-api.md. It is
+https://github.com/gem/oq-engine/blob/engine-2.7/doc/web-api.md. It is
 possible to build your own user interface for the engine on top of it,
 since the API is stable and kept backward compatible.
diff --git a/doc/sphinx/intro.rst b/doc/sphinx/intro.rst
index b10e85de653b..82fcad9edc22 100644
--- a/doc/sphinx/intro.rst
+++ b/doc/sphinx/intro.rst
@@ -33,7 +33,7 @@ support on IRC channel #openquake on freenode.
 Installation
 ------------
 
-See https://github.com/gem/oq-engine/blob/master/README.md#installation
+See https://github.com/gem/oq-engine/blob/engine-2.7/README.md#installation
 
 License
 -------
diff --git a/doc/whats-new.md b/doc/whats-new.md
index b4dc76e10174..d7605eb560f2 100644
--- a/doc/whats-new.md
+++ b/doc/whats-new.md
@@ -117,7 +117,7 @@ The WebUI now support groups of user, i.e. you can restrict the access
 as you want. The `admin` user sees a link in the WebUI from which she
 can directly configure the groups by using the Django admin interface.
 System administrators interested in using this feature should read
-https://github.com/gem/oq-engine/blob/master/doc/installing/server.md.
+https://github.com/gem/oq-engine/blob/engine-2.7/doc/installing/server.md.
 By default, no authentication is enabled and everything is visible
 to everybody.