diff --git a/buildout.cfg b/buildout.cfg
index 768a3401e470ca02c6658b79210869d3c7bfeda4..53c024559d24002684eff0a219bf04c17965881c 100644
--- a/buildout.cfg
+++ b/buildout.cfg
@@ -75,6 +75,7 @@ eggs = alabaster
        six
        snowballstemmer
        Sphinx
+       sphinxcontrib-ansi
        sphinxcontrib-httpdomain
        sphinxcontrib-mscgen
        sphinxcontrib-programoutput
@@ -85,9 +86,9 @@ eggs = alabaster
        wsgiref
 
 [sources]
-beat.core = git git@gitlab.idiap.ch:beat/beat.core
-beat.cmdline = git git@gitlab.idiap.ch:beat/beat.cmdline
-beat.backend.python = git git@gitlab.idiap.ch:beat/beat.backend.python
+beat.cmdline = git git@gitlab.idiap.ch:beat/beat.cmdline rev=v1.0.1
+beat.core = git git@gitlab.idiap.ch:beat/beat.core rev=v1.1.0
+beat.backend.python = git git@gitlab.idiap.ch:beat/beat.backend.python rev=v1.0.1
 beat.examples = git git@gitlab.idiap.ch:beat/beat.examples egg=false
 
 [scripts]