diff --git a/.travis.yml b/.travis.yml
index 0620fb655..b72788bd1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ sudo: false
 cache: pip
 
 addons:
+  postgresql: "9.2" # minimal postgresql version for the daterange method
   apt:
     packages:
       - expect-dev  # provides unbuffer utility
diff --git a/oca_dependencies.txt b/oca_dependencies.txt
index 5ce872061..03020f18c 100644
--- a/oca_dependencies.txt
+++ b/oca_dependencies.txt
@@ -1,2 +1,3 @@
 reporting-engine
 connector
+server-tools