diff --git a/doc/upstream-training/source/04-program-ecosystem.rst b/doc/upstream-training/source/04-program-ecosystem.rst
index a50156e1..e36bef5f 100644
--- a/doc/upstream-training/source/04-program-ecosystem.rst
+++ b/doc/upstream-training/source/04-program-ecosystem.rst
@@ -87,25 +87,9 @@ Stackforge
 .. image:: ./_assets/04-05-stackforge.png
   :width: 100%
 
-- Gerrit code review
-- Jenkins continuous integration
-- Git repository
-- IRC bots, pypi uploads...
-
-What is Stackforge for
-======================
-
-.. image:: ./_assets/04-06-stackforge.png
-  :width: 100%
-
-- Maintain related unofficial projects
-- Same tools and procedures used by the main projects
-
-How to add a project to Stackforge
-==================================
-
-.. image:: ./_assets/04-07-stackforge.png
-  :width: 100%
+- Stackforge was used for new unofficial projects, but retired on Aug 2015
+- Replaced by Big Tent initiative
+- Used the same processes and tools as the main OpenStack projects
 
 Exercise
 ========
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