diff --git a/.travis.yml b/.travis.yml
index dca9518..a62d58e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,14 @@ php:
   - 5.3
   - 5.4
 
+env:
+  - MONGO_VERSION=1.2.12
+
 before_script:
+  - wget http://pecl.php.net/get/mongo-${MONGO_VERSION}.tgz
+  - tar -xzf mongo-${MONGO_VERSION}.tgz
+  - sh -c "cd mongo-${MONGO_VERSION} && phpize && ./configure && make && sudo make install"
+  - echo "extension=mongo.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`
   - wget -nc http://getcomposer.org/composer.phar
   - php composer.phar install --dev