diff --git a/.travis.yml b/.travis.yml
index a5f544a..2e7ef27 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,8 +39,8 @@ before_install:
   - sudo apt-get -y autoremove
 
   - sudo apt-get -y install postgresql-9.5=9.5.2-3cdb1
-  - sudo apt-get -y install postgresql-server-dev-9.5=9.5.2-2ubuntu1
-  - sudo apt-get -y install postgresql-plpython-9.5=9.5.2-2ubuntu1
+  - sudo apt-get -y install postgresql-server-dev-9.5=9.5.2-3cdb1
+  - sudo apt-get -y install postgresql-plpython-9.5=9.5.2-3cdb1
   - sudo apt-get -y install postgresql-9.5-postgis-scripts=2.2.2.0-cdb2
   - sudo apt-get -y install postgresql-9.5-postgis-2.2=2.2.2.0-cdb2